How To Write An On A Linux Computer (No Mail) (No ) (For Ahem) (Or Ahem, For Ahem). (For An ) Or Ahem.Org) (Ahem) Or An
|
|
|
- Silvia Agnes Watson
- 3 years ago
- Views:
Transcription
1 Electronic mail Aka (Knuth) dr. C. P. J. Koymans Informatics Institute Universiteit van Amsterdam November 20, 2007 dr. C. P. J. Koymans (UvA) Electronic mail November 20, / 31
2 History of (1) 1971 Tomlinson s first introduces piggybacked on FTP 1979 UUCP-based introduces the bang (!) not based on TCP/IP (or NCP) dr. C. P. J. Koymans (UvA) Electronic mail November 20, / 31
3 History of (2) 1982 SMTP specified 1983 sendmail released (4.1c BSD) 1984 DNS specified sendmail knows (ARPANET)! (UUCP) : (BerkNet) dr. C. P. J. Koymans (UvA) Electronic mail November 20, / 31
4 Survey October 2001 (Dan Bernstein) 401 UNIX (Sendmail) 176 Windows (Exchange/IIS) 167 UNIX (qmail) 57 Windows (Ipswitch IMail) 23 UNIX (smap) 15 UNIX (IBM Postfix, formerly VMailer) 14 UNIX (Exim) dr. C. P. J. Koymans (UvA) Electronic mail November 20, / 31
5 Survey May 2003 (Thomas Pircher) (35.59%) Sendmail 4537 (8.42%) qmail 4104 (7.62%) Postfix 2812 (5.22%) Microsoft (Exchange/IIS) 2464 (4.57%) Exim dr. C. P. J. Koymans (UvA) Electronic mail November 20, / 31
6 Survey October 2004 (SNE) (35.3%) Sendmail (21.0%) Microsoft (Exchange/IIS) 6836 (11.8%) Exim 4008 (6.9%) imail 3669 (6.3%) qmail 3172 (5.5%) Postfix dr. C. P. J. Koymans (UvA) Electronic mail November 20, / 31
7 concepts Message agents (no RFC) Message format (RFC 2822) Message transport (RFC 2821) Message stores (no RFC) dr. C. P. J. Koymans (UvA) Electronic mail November 20, / 31
8 Message agents MUA (Mail (Message) User Agent) MTA (Mail (Message) Transport Agent) MDA (Mail (Message) Delivery Agent) MSA (Mail (Message) Submission Agent) MAA (Mail (Message) Access Agent) MRA (Mail (Message) Retrieval Agent) dr. C. P. J. Koymans (UvA) Electronic mail November 20, / 31
9 Mail User Agent Interface for the user reads and composes messages mutt, pine, Outlook, Thunderbird,... Often uses SMTP to send mail ( MSA) Often uses IMAP/POP3 to get mail ( MAA) May have direct access to message store dr. C. P. J. Koymans (UvA) Electronic mail November 20, / 31
10 Mail Transport Agent Transports across the Internet Uses SMTP as transport protocol sendmail, postfix, qmail, exim Often also operates as a Mail Submission Agent Makes use of MX records to transport dr. C. P. J. Koymans (UvA) Electronic mail November 20, / 31
11 Mail Delivery Agent Delivers into the message store (MS) mail, mail.local, rmail, procmail may do filtering, SPAM and virus checking,... has knowledge about mailbox formats can use global (/var/mail/mbox) or user-specific ($HOME/mbox) space dr. C. P. J. Koymans (UvA) Electronic mail November 20, / 31
12 Mail Submission Agent (1) Discussed in RFC 2476 Injects message into mail system Sanitizes message content Envelope domains must be FQDNs Often combined with MTA May bind to its own port (587) dr. C. P. J. Koymans (UvA) Electronic mail November 20, / 31
13 Mail Submission Agent (2) Can operate locally sendmail (no daemon mode) postdrop without SMTP or with piped SMTP May be an MTA-frontend smapd dr. C. P. J. Koymans (UvA) Electronic mail November 20, / 31
14 Mail Access Agent Can get message out of Message Store (MS) Offers services to access mail to MUA (or MRA) POP3 (Post Office Protocol) IMAP (Internet Message Access Protocol, version 4) dr. C. P. J. Koymans (UvA) Electronic mail November 20, / 31
15 Mail Retrieval Agent Program that uses a MAA to collect mail Possibly reinjects mail into the mail system fetchmail SMTP TURN(insecure)/ETRN(secure;see RFC 1985) dr. C. P. J. Koymans (UvA) Electronic mail November 20, / 31
16 Mail Agent Relationships dr. C. P. J. Koymans (UvA) Electronic mail November 20, / 31
17 Securing (1) Use secure protocols imap (port 143) imaps (port 993) pop3 (port 110) pop3s (port 995) smtp (port 25) smtps, ssmtp (port 465)? dr. C. P. J. Koymans (UvA) Electronic mail November 20, / 31
18 Securing (2) SMTP improvements Authenticated SMTP AUTH extension based on SASL STARTTLS extension dr. C. P. J. Koymans (UvA) Electronic mail November 20, / 31
19 Securing (3) Use MUA-based encryption and authentication PGP (Pretty Good Privacy) Inline or PGP/MIME GPG (GNU Privacy Guard) S/MIME dr. C. P. J. Koymans (UvA) Electronic mail November 20, / 31
20 Message format RFC 2822 Headers, empty line, body Only 7-bit US-ASCII (1-127) allowed MIME extends this to possibly 8-bit Lines are delimited by <CR><LF> Lines should be no longer than 78 characters dr. C. P. J. Koymans (UvA) Electronic mail November 20, / 31
21 Message (ABNF) message = (fields / obs-fields) CRLF body body = *(*998text CRLF) *998text Mathematical isomorphism text + = (text {CRLF}) CRLF is delimiter, not terminator dr. C. P. J. Koymans (UvA) Electronic mail November 20, / 31
22 Header format <Field name>:<field body> <Field name> printable US-ASCII (33-126) except : (58) <Field body> US-ASCII (1-127) except CR(13) and LF(10) dr. C. P. J. Koymans (UvA) Electronic mail November 20, / 31
23 Some important headers From:<originator mailbox> Sender:<sender mailbox> To:<recipient mailbox> Message-Id:<unique message identification> Received:<registration of message transport> dr. C. P. J. Koymans (UvA) Electronic mail November 20, / 31
24 Message transport SMTP (RFC 2821) Uses Network Virtual Terminal (NVT) presentation layer from RFC Mail objects content (in message format ) envelope (SMTP parameters) dr. C. P. J. Koymans (UvA) Electronic mail November 20, / 31
25 Normal (E)SMTP session EHLO (greeting, option negotiation) MAIL FROM: (envelope sender) RCPT TO: (envelope recipient) DATA (content, ended by <CRLF>.<CRLF>) QUIT (goodbye) dr. C. P. J. Koymans (UvA) Electronic mail November 20, / 31
26 Message store In database Only accessible via IMAP, POP3 In flat files Also accessible via direct access Enables grepping the message store dr. C. P. J. Koymans (UvA) Electronic mail November 20, / 31
27 Mbox format Ordinary file with multiple messages separated by From at start of line has extra blank line at end of message quotes From to >From From <envelopesender> <date> <optionalinfo> dr. C. P. J. Koymans (UvA) Electronic mail November 20, / 31
28 MMDF format Variant of mbox format UsesˆAˆAˆAˆA Optionally has the mbox From information dr. C. P. J. Koymans (UvA) Electronic mail November 20, / 31
29 MH format Mailbox is a directory Every message is a file with a numeric name Used by mh, nmh, xnmh MUA s dr. C. P. J. Koymans (UvA) Electronic mail November 20, / 31
30 Maildir format Mailbox is again a directory Subdirectories tmp, new, cur Arriving mail: tmp/<time>.<pid>.<host> No mailbox locking needed Works reliably over NFS dr. C. P. J. Koymans (UvA) Electronic mail November 20, / 31
31 Mailbox locking Uses flock, lockf, fcntl system calls Does not always work reliably over NFS Needed if delivery agents and/or access agents operate on the same file (mailbox) dr. C. P. J. Koymans (UvA) Electronic mail November 20, / 31
Table of Contents. Electronic mail. History of email (2) History of email (1) Email history. Basic concepts. Aka e-mail (or email according to Knuth)
Table of Contents Electronic mail Aka e-mail (or email according to Knuth) Karst Koymans / Jeroen van der Ham Informatics Institute University of Amsterdam Tuesday, September 25, 2011 Email history Basic
Mail system components. Electronic Mail MRA MUA MSA MAA. David Byers
Electronic Mail PRINCIPLES DNS ARCHITECTURES SPAM Mail system components () () David Byers MRA davby@ida.liu.se IDA/ADIT/IISLAB Mail User Agent Reads and writes e-mail Writes e-mail to using (usually)
Network Services. Email SMTP, Internet Message Format. Johann Oberleitner SS 2006
Network Services Email SMTP, Internet Message Format Johann Oberleitner SS 2006 Agenda Email SMTP Internet Message Format Email Protocols SMTP Send emails POP3/IMAPv4 Read Emails Administrate mailboxes
The basic groups of components are described below. Fig X- 1 shows the relationship between components on a network.
Elements of Email Email Components There are a number of software components used to produce, send and transfer email. These components can be broken down as clients or servers, although some components
Emacs SMTP Library. An Emacs package for sending mail via SMTP. Simon Josefsson, Alex Schroeder
Emacs SMTP Library An Emacs package for sending mail via SMTP Simon Josefsson, Alex Schroeder Copyright c 2003, 2004 Free Software Foundation, Inc. Permission is granted to copy, distribute and/or modify
Mail agents. Introduction to Internet Mail. Message format (2) Authenticating senders
Mail agents Introduction to Internet Mail Philip Hazel University of Cambridge MUA = Mail User Agent Interacts directly with the end user Pine, MH, Elm, mutt, mail, Eudora, Marcel, Mailstrom, Mulberry,
Mailing System: The Intra Mail
Mailing System: The Intra Mail Prof. T. Malik Asst. Professor, Telecommunication JSBT School of Engineering & Technology Bangaluru, India Ms. S. P. Harini Research Associate, Network Infrastructure Edith
CS43: Computer Networks Email. Kevin Webb Swarthmore College September 24, 2015
CS43: Computer Networks Email Kevin Webb Swarthmore College September 24, 2015 Three major components: mail (MUA) mail transfer (MTA) simple mail transfer protocol: SMTP User Agent a.k.a. mail reader composing,
2- Electronic Mail (SMTP), File Transfer (FTP), & Remote Logging (TELNET)
2- Electronic Mail (SMTP), File Transfer (FTP), & Remote Logging (TELNET) There are three popular applications for exchanging information. Electronic mail exchanges information between people and file
Mail Avenger. David Mazières New York University
Mail Avenger David Mazières New York University Early design goals for email Work over weakly connected networks - E.g., early Internet, UUCP, etc. - Move mail closer to recipient whenever you can... -
Chapter 2 Application Layer. Lecture 5 FTP, Mail. Computer Networking: A Top Down Approach
Chapter 2 Application Layer Lecture 5 FTP, Mail Computer Networking: A Top Down Approach 6 th edition Jim Kurose, Keith Ross Addison-Wesley March 2012 Application Layer 2-1 Chapter 2: outline 2.1 principles
Linux Network Administration
Linux Network Administration Sendmail Evolution of Email The birth of electronic mail (email) occurred in the early 1960s The mailbox was a file in a user's home directory that was readable only by that
CSE/ISE 311: Systems Administra5on Email Administra5on
Email Administra5on Don Porter Theme Email systems started with a pre5y simple design Everyone trusted each other, it was nice Then spam came along Lots of complexity and distrust to try to reduce spam
SuSE email Solutions Based on
SuSE email Solutions Based on SuSE Linux Enterprise Server 8 SuSE Linux AG Whitepaper SuSE email Solutions Based on SuSE Linux Enterprise Server 8 1 Overview... 3 2 Value Propositions... 3 3 System Structure
Networking Applications
Networking Dr. Ayman A. Abdel-Hamid College of Computing and Information Technology Arab Academy for Science & Technology and Maritime Transport Electronic Mail 1 Outline Introduction SMTP MIME Mail Access
QMAIL & SMTP: A Secure Application for an Unsecure Protocol. Orr Dunkelman. orrd@vipe.technion.ac.il. January 27, 2004 SMTP and QMAIL Slide 1
QMAIL & SMTP: A Secure Application for an Unsecure Protocol Orr Dunkelman January 27, 2004 SMTP and QMAIL Slide 1 SMTP, MUA and MTA Speak English Whenever we deal with protocols we (=Internet geeks) like
Postfix. by Rod Roark http://www.sunsetsystems.com/
Postfix by Rod Roark http://www.sunsetsystems.com/ Terminology MTA MDA MUA SMTP IMAP POP3 UCE Mail Transfer Agent Receives mail from or sends mail to other computers Talks with other MTAs and certain other
2- Electronic Mail (SMTP), File Transfer (FTP), & Remote Logging (TELNET)
2- Electronic Mail (SMTP), File Transfer (FTP), & Remote Logging (TELNET) There are three popular applications for exchanging information. Electronic mail exchanges information between people and file
SMTP Servers. Determine if an email message should be sent to another machine and automatically send it to that machine using SMTP.
SMTP Servers SMTP: Simple Mail Transfer Protocol (TCP Port 25) The Simple Mail Transfer Protocol (SMTP) is an Internet standard for transferring electronic mail between computers. UNIX systems implement
Internet Architecture
Internet Architecture Lecture 10: How Email Work Assistant Teacher Samraa Adnan Al-Asadi 1 How Email Works Electronic mail, or email, might be the most heavily used feature of the Internet. You can use
"Charting the Course... Enterprise Linux Networking Services Course Summary
Course Summary Description This an expansive course that covers a wide range of network services useful to every organization. Special attention is paid to the concepts needed to implement these services
CipherMail Gateway Quick Setup Guide
CIPHERMAIL EMAIL ENCRYPTION CipherMail Gateway Quick Setup Guide October 10, 2015, Rev: 9537 Copyright 2015, ciphermail.com. CONTENTS CONTENTS Contents 1 Introduction 4 2 Typical setups 4 2.1 Direct delivery............................
E-Mail Tools. David Hilley. davidhi@cc.gatech.edu. David Hilley, March 5, 2008 L A T E X - p. 1
E-Mail Tools David Hilley davidhi@cc.gatech.edu David Hilley, March 5, 2008 L A T E X - p. 1 Roadmap / Overview & Configuration Running Your Own? David Hilley, March 5, 2008 L A T E X - p. 2 Email Pipeline/Components?
GL-275: Red Hat Linux Network Services. Course Outline. Course Length: 5 days
GL-275: Red Hat Linux Network Services Course Length: 5 days Course Description: The GL275 is an expansive course that covers a wide range of network services useful to every organization. Special attention
ENTERPRISE LINUX NETWORKING SERVICES
ENTERPRISE LINUX NETWORKING SERVICES The is an expansive course that covers a wide range of network services useful to every organization. Special attention is paid to the concepts needed to implement
GL275 - ENTERPRISE LINUX NETWORKING SERVICES
Length: 5 days The GL275 is an expansive course that covers a wide range of network services useful to every organization. Special attention is paid to the concepts needed to implement these services securely,
Anti-spam filtering techniques
Anti-spam filtering techniques Stéphane Bortzmeyer AFNIC (.fr registry) bortzmeyer@nic.fr ITU, 19 january 2006 1 Anti-spam filtering techniques Background on this work This work started in the french Working
Electronic mail security. MHS (Message Handling System)
Electronic mail security Diana Berbecaru < diana.berbecaru @ polito.it> Politecnico di Torino Dip. Automatica e Informatica MHS (Message Handling System) MS MS MUA MUA (Message Transfer ) MS (Message Store)
Internet Technology 2/13/2013
Internet Technology 03r. Application layer protocols: email Email: Paul Krzyzanowski Rutgers University Spring 2013 1 2 Simple Mail Transfer Protocol () Defined in RFC 2821 (April 2001) Original definition
Change is Coming: z/os Mail Overview and Futures
Change is Coming: z/os Mail Overview and Futures (Including Motivations and Considerations for migrating from SMTPD/Sendmail to CSSMTP) Kim Bailey (ktekavec@us.ibm.com) IBM, Enterprise Networking Solutions
Filtering Mail with Milter. David F. Skoll Roaring Penguin Software Inc.
Filtering Mail with Milter David F. Skoll Roaring Penguin Software Inc. Why filter mail? Overview Different filtering approaches Delivery agent (e.g. Procmail) Central filtering (Milter) Milter Architecture
Lab Tasks 1. Configuring a Slave Name Server 2. Configure rndc for Secure named Control
Khóa học bao trùm tất cả các vấn đề về dịch vụ mạng trong doanh nghiệp bao gồm: khái niệm DNS, triển khai DNS sử dụng Bind; khái niệm LDAP và sử dụng OpenLDAP; dịch vụ Web với Apache; dịch vụ FTP với vsftpd;
An Introduction to Secure Email. Presented by: Addam Schroll IT Security & Privacy Analyst
An Introduction to Secure Email Presented by: Addam Schroll IT Security & Privacy Analyst Topics Secure Email Basics Types of Secure Email Walkthroughs 2 Secure Email Services Confidentiality Message Integrity
Email Architecture. with sendmail and postfix. dr. C. P. J. Koymans. Informatics Institute University of Amsterdam. September 30, 2008
Email Architecture with sendmail and postfix dr. C. P. J. Koymans Informatics Institute University of Amsterdam September 30, 2008 dr. C. P. J. Koymans (UvA) Email Architecture September 30, 2008 1 / 40
FTP and email. Computer Networks. FTP: the file transfer protocol
Computer Networks and email Based on Computer Networking, 4 th Edition by Kurose and Ross : the file transfer protocol transfer file to/from remote host client/ model client: side that initiates transfer
CSCI-1680 SMTP Chen Avin
CSCI-1680 Chen Avin Based on Computer Networking: A Top Down Approach - 6th edition Electronic Three major components: s s simple transfer protocol: User Agent a.k.a. reader composing, editing, reading
Table of Contents. Email Architecture. Organisation. Structure of the organisation. Structure. with sendmail and postfix.
Table of Contents Email Architecture with sendmail and postfix dr. C. P. J. Koymans Informatics Institute University of Amsterdam October 5, 2009 Structure Email flows Sendmail Postfix Other MTA s Organisation
Email. MIME is the protocol that was devised to allow non-ascii encoded content in an email and attached files to an email.
Email Basics: Email protocols were developed even before there was an Internet, at a time when no one was anticipating widespread use of digital graphics or even rich text format (fonts, colors, etc.),
CS 356 Lecture 27 Internet Security Protocols. Spring 2013
CS 356 Lecture 27 Internet Security Protocols Spring 2013 Review Chapter 1: Basic Concepts and Terminology Chapter 2: Basic Cryptographic Tools Chapter 3 User Authentication Chapter 4 Access Control Lists
ECE Mail System Overview. Pablo J. Rebollo ECE Network Operations Center
ECE Mail System Overview Pablo J. Rebollo ECE Network Operations Center Agenda Overview of ECE mail system How mail system works SPAM!!! ECE mail system statistics and examples Problems References Mail
PGP Universal Satellite Version 2.7 for Windows Release Notes
PGP Universal Satellite Version 2.7 for Windows Release Notes Thank you for using this PGP Corporation product. These Release Notes contain important information regarding this release of PGP Universal
Email Electronic Mail
Email Electronic Mail Electronic mail paradigm Most heavily used application on any network Electronic version of paper-based office memo Quick, low-overhead written communication Dates back to time-sharing
sendmail Cookbook Craig Hunt O'REILLY' Beijing Cambridge Farnham Koln Paris Sebastopol Taipei Tokyo
sendmail Cookbook Craig Hunt O'REILLY' Beijing Cambridge Farnham Koln Paris Sebastopol Taipei Tokyo Table of Contents Preface xi 1. Getting Started 1 1.1 Downloading the Latest Release 5 1.2 Installing
Appendix. Web Command Error Codes. Web Command Error Codes
Appendix Web Command s Error codes marked with * are received in responses from the FTP server, and then returned as the result of FTP command execution. -501 Incorrect parameter type -502 Error getting
2014-10-07. Email security
Email security Simple Mail Transfer Protocol First defined in RFC821 (1982), later updated in RFC 2821 (2001) and most recently in RFC5321 (Oct 2008) Communication involves two hosts SMTP Client SMTP Server
International Journal of Computer Trends and Technology- March to April Issue 2011
EMAIL SECURITY PROTOCOL Sunny gill 1, Gaurav Rupnar 1, Vaibhav Ramteke 1,PROF. Dipti Patil 2, Vijay M.Wadhai 3 1 Computer Engineering Department, MIT College of Engineering,Pune 2 Assistant Professor,
EMB. E-Mail Basics. Goals of this lab: Prerequisites: LXB, NET, DNS
EMB E-Mail Basics Goals of this lab: Learn how e-mail works under the hood Learn about spam filtering and virus scanning Gain experience setting up a full-fledged e-mail service Prerequisites: LXB, NET,
Mail Server Administration
Clemson University CPSC 424: Systems Administration and Security Section 001 Mail Server Administration Authors: Joshua Groppe William Collins Instructor: James M.Martin, Ph.D April 25, 2014 1 Introduction
20.12. smtplib SMTP protocol client
20.12. smtplib SMTP protocol client The smtplib module defines an SMTP client session object that can be used to send mail to any Internet machine with an SMTP or ESMTP listener daemon. For details of
Evolution of the WWW. Communication in the WWW. WWW, HTML, URL and HTTP. HTTP Abstract Message Format. The Client/Server model is used:
Evolution of the WWW Communication in the WWW World Wide Web (WWW) Access to linked documents, which are distributed over several computers in the History of the WWW Origin 1989 in the nuclear research
Math SMTP Server Configuration
Math SMTP Server Configuration Šarūnas Burdulis Version 1, August 3, 2005 Contents 1 Requirements for SMTP Service at Math 1 2 Exim 4 1 3 Spam Filtering 2 4 Virus Detection 3 5 Authentication and TLS 4
Introduction. Friday, June 21, 2002
This article is intended to give you a general understanding how ArGoSoft Mail Server Pro, and en Email, in general, works. It does not give you step-by-step instructions; it does not walk you through
Technical papers How email works
Technical papers How email works This document has now been archived How email works Contents How email works What is email? What makes up an email? How does email work? The client The server How do email
A Guide E-Mail Systems and Security. Brian Donadio. East Carolina University
E-Mail Security 1 A Guide E-Mail Systems and Security Brian Donadio East Carolina University E-Mail Security 2 Abstract Electronic Mail is quite arguably the most important application for personal and
Email Security. Michael E. Locasto University of Calgary
Email Security Michael E. Locasto University of Calgary Agenda Read Chapter 20 and 21 - don t need to memorize PEM details background: RFCs, Chapter 22 Concept queskon: Where do we put security? SMTP Refresher
debops.postfix documentation
debops.postfix documentation Release master DebOps Project February 18, 2015 Contents 1 Introduction 1 1.1 Features.................................................. 1 2 Installation 3 2.1 Role dependencies............................................
ENTERPRISE LINUX NETWORKING SERVICES
ENTERPRISE LINUX NETWORKING SERVICES COURSE DESCRIPTION: The GL275 is an expansive course that covers a wide range of network services useful to every organization. Special attention is paid to the concepts
E-Mail Security. Raj Jain. Washington University in St. Louis
E-Mail Security Raj Jain Washington University in Saint Louis Saint Louis, MO 63130 Jain@cse.wustl.edu Audio/Video recordings of this lecture are available at: http://www.cse.wustl.edu/~jain/cse571-07/
Architecture of a scalable mail system. Joel Jaeggli for PACNOG2 June 2006
Architecture of a scalable mail system Joel Jaeggli for PACNOG2 June 2006 The problem... E-mail is one of the most critical services beyond actual IP service that an ISP fields for it's customers. Yet,
Postfix Configuration and Administration
c 2007 Patrick Koetter & Ralf Hildebrandt state-of-mind LISA 07 Dallas, November 2007 System architecture System metaphor SMTP UUCP QMQP sendmail Postfix SMTP LMTP local pipe virtual transport aliases
Remote login (Telnet):
SFWR 4C03: Computer Networks and Computer Security Feb 23-26 2004 Lecturer: Kartik Krishnan Lectures 19-21 Remote login (Telnet): Telnet permits a user to connect to an account on a remote machine. A client
Renewal of the Email Services
Renewal of the Email Services IMAP, SMTP & Co. Wolfgang Friebel Technical Seminar Zeuthen, 6.10.2009 Outline of the talk Schematic view of the mail flow in Zeuthen What will when be changed Receiving email
Simple Mail Transfer Protocol
Page 1 of 6 Home : Network Programming Simple Mail Transfer Protocol Contents What is SMTP? Basics of SMTP SMTP Commands Relaying of Messages Time Stamps and Return Path in Message Header Mail Exchangers
Configure a Mail Server
SECTION 3 Configure a Mail Server In this section of the workbook, you learn how to do the following: Send Mail to root on 3-3 In this exercise, you send an email to user root using the mail command and
Domain Name System (DNS)
Application Layer Domain Name System Domain Name System (DNS) Problem Want to go to www.google.com, but don t know the IP address Solution DNS queries Name Servers to get correct IP address Essentially
Trivial Internet weaknesses with solutions proposal ( A A global initiative Part 1: Focusing on e-mail)
Trivial Internet weaknesses with solutions proposal ( A A global initiative Part 1: Focusing on e-mail) Ram Narula ram@pluslab.com For presentation at APNIC 20 in Hanoi Simple Mail Transfer Protocol (SMTP)
SMTP (Simple Mail Transfer Protocol)
SMTP (Simple Mail Transfer Protocol) Vladimir V. Riabov, Rivier College Introduction 1 SMTP Fundamentals 1 SMTP Model and Protocol 2 User Agent 4 Sending e-mail 4 Mail Header Format 4 Receiving e-mail
Ficha técnica de curso Código: IFCAD241
Curso de: Linux E-mail. Set up, maintain, and secure a small office e- mail server Objetivos: Aprender a instalar, mantener y securizar un correo en un sistema linux. Destinado a: Todo administrador de
Implementing MDaemon as an Email Security Gateway to Exchange Server
Implementing MDaemon as an Email Security Gateway to Exchange Server Introduction MDaemon is widely deployed as a very effective antispam/antivirus gateway to Exchange. For optimum performance, we recommend
Evolution of the WWW. Communication in the WWW. WWW, HTML, URL and HTTP. HTTP - Message Format. The Client/Server model is used:
Evolution of the WWW Communication in the WWW World Wide Web (WWW) Access to linked documents, which are distributed over several computers in the History of the WWW Origin 1989 in the nuclear research
XGENPLUS SECURITY FEATURES...
Security Features Table of Contents TABLE OF CONTENTS... 2 1. INTRODUCTION... 3 2. XGENPLUS SECURITY FEATURES... 3 3. SERVER LEVEL FEATURES... 5 4. DOMAIN LEVEL FEATURES... 8 5. USER LEVEL FEATURES...
Configuring Outlook to send mail via your Exchange mailbox using an alternative email address
Configuring Outlook to send mail via your Exchange mailbox using an alternative email address This document is based on Exchange mailboxes and using Outlook 2007. The principles outlined are equally valid
CS 164 Winter 2009 Term Project Writing an SMTP server and an SMTP client (Receiver-SMTP and Sender-SMTP) Due & Demo Date (Friday, March 13th)
CS 164 Winter 2009 Term Project Writing an SMTP server and an SMTP client (Receiver-SMTP and Sender-SMTP) Due & Demo Date (Friday, March 13th) YOUR ASSIGNMENT Your assignment is to write an SMTP (Simple
Secured Mail through PGP Mail Gateway
Secured Mail through PGP Mail Gateway L. S. Haturusinha, Y. Y. Landersz, A. U. H. Gamage, P. N. Pathiranage, G. T. D. Rodrigo, and M. P. A. W. Gamage Abstract PGP Mail Gateway is a backend server which
Collax Mail Server. Howto. This howto describes the setup of a Collax server as mail server.
Collax Mail Server Howto This howto describes the setup of a Collax server as mail server. Requirements Collax Business Server Collax Groupware Suite Collax Platform Server including Collax Communication
Email, SNMP, Securing the Web: SSL
Email, SNMP, Securing the Web: SSL 4 January 2015 Lecture 12 4 Jan 2015 SE 428: Advanced Computer Networks 1 Topics for Today Email (SMTP, POP) Network Management (SNMP) ASN.1 Secure Sockets Layer 4 Jan
FTP: the file transfer protocol
File Transfer: FTP FTP: the file transfer protocol at host FTP interface FTP client local file system file transfer FTP remote file system transfer file to/from remote host client/ model client: side that
Understanding SMTP authentication and securing your IBM Lotus Domino 8 server from spam
Understanding SMTP authentication and securing your IBM Lotus Domino 8 server from spam Shrikant Jamkhandi IBM Software Group Senior Software Engineer Pune, India September 2009 Copyright International
Internet Security [1] VU 184.216. Engin Kirda engin@infosys.tuwien.ac.at
![Internet Security [1] VU 184.216. Engin Kirda engin@infosys.tuwien.ac.at](/thumbs/33/15826620.jpg "Internet Security [1] VU 184.216. Engin Kirda engin@infosys.tuwien.ac.at")
Internet Security [1] VU 184.216 Engin Kirda engin@infosys.tuwien.ac.at Christopher Kruegel chris@auto.tuwien.ac.at Administration Challenge 2 deadline is tomorrow 177 correct solutions Challenge 4 will
MailStore Server 5.0 Documentation
MailStore Server 5.0 Documentation 2010 deepinvent Software GmbH 24. May 2011 Products that are referred to in this document may be either trademarks and/or registered trademarks of the respective owners.
DKIM last chance for mail service? TFMC2 01/2006
DKIM last chance for mail service? TFMC2 01/2006 Mail service status More and more spam, fishing, spoofing, virus More and more energy in spam fighting More and more messages lost because : Imperfect automatic
StarterPlus Mailbox Email Software Setup Guide
StarterPlus Mailbox Email Software Setup Guide Setting up an StarterPlus mailbox only takes a few minutes. You can set up any email software to send and receive email from your mailbox. You can connect
Internet Technologies Internet Protocols and Services
QAFQAZ UNIVERSITY Computer Engineering Department Internet Technologies Internet Protocols and Services Dr. Abzetdin ADAMOV Chair of Computer Engineering Department aadamov@qu.edu.az http://ce.qu.edu.az/~aadamov
Exchange 2007/2010 Journaling for Cryoserver
Exchange 2007/2010 Journaling for Cryoserver How to set up Exchange 2007 / 2010 Journaling, to capture an archive copy of all inbound/outbound and internal mail, for delivery to the Cryoserver system February
PineApp Archive-Secure Quick Installation Guide:
PineApp Archive-Secure Quick Installation Guide: The following guide provides setup instructions for Archive-SeCure s quick implementation for your network environment. For further detailing and other
Email Security. Guevara Noubir Network Security Northeastern University
Guevara Noubir Network Security Northeastern University 1 Email One of the most widely used applica>ons of the Internet but s>ll rela>vely insecure Designed without security concerns How does email work?
Workflow Configuration on R12/R11. High Level Steps. SENDMAIL configuration mostly done by System Administrator Workflow configuration for R12
Workflow Configuration on R12/R11 High Level Steps SENDMAIL configuration mostly done by System Administrator Workflow configuration for R12 SENDMAIL Configuration tested on RedHat 4 update 5 -------------------------------------------------------------------
POP3 Connector for Exchange - Configuration
Eclarsys PopGrabber POP3 Connector for Exchange - Configuration PopGrabber is an excellent replacement for the POP3 connector included in Windows SBS 2000 and 2003. It also works, of course, with Exchange
Firewall, Mail and File server solution
Firewall, Mail and File server solution Table of Contents Introduction......2 Overview......3 Detailed description....4 Firewall......4 Other services offered by IPCop:......4 Mail and File Server......5
Internet Security. Contents. ITS335: IT Security. Internet Security. Secure Email. Summary
2 : IT Security Sirindhorn International Institute of Technology Thammasat University Prepared by Steven Gordon on 2 January 2015 its335y14s2l10, Steve/Courses/2014/s2/its335/lectures/internet.tex, r3506
Guidelines on Electronic Mail Security
Special Publication 800-45 Guidelines on Electronic Mail Security Recommendations of the National Institute of Standards and Technology Miles Tracy, Wayne Jansen, and Scott Bisker NIST Special Publication
Chakchai So-In, Ph.D.
Application Layer Functionality and Protocols Chakchai So-In, Ph.D. Khon Kaen University Department of Computer Science Faculty of Science, Khon Kaen University 123 Mitaparb Rd., Naimaung, Maung, Khon
CPSC 360 - Network Programming. Email, FTP, and NAT. http://www.cs.clemson.edu/~mweigle/courses/cpsc360
CPSC 360 - Network Programming E, FTP, and NAT Michele Weigle Department of Computer Science Clemson University mweigle@cs.clemson.edu April 18, 2005 http://www.cs.clemson.edu/~mweigle/courses/cpsc360
Mail services @ NIKHEF
Mail services @ NIKHEF CT system support Nov 2003 1 CT NIKHEF Outline NIKHEF SMTP mail service Incoming mail (virus, spam, etc) Read mail (imap/pop) Mail clients Nov 2003 2 CT NIKHEF NIKHEF SMTP mail server
Chapter 26 Remote Logging, Electronic Mail, 26.1 Copyright The McGraw-Hill Companies, Inc. Permission required for reproduction or display.
Chapter 26 Remote Logging, Electronic Mail, and File Transfer 26.1 Copyright The McGraw-Hill Companies, Inc. Permission required for reproduction or display. 26-1 REMOTE LOGGING It would be impossible
IBM i. Networking E-mail. Version 7.2
IBM i Networking E-mail Version 7.2 IBM i Networking E-mail Version 7.2 Note Before using this information and the product it supports, read the information in Notices on page 53. This document may contain
Fundamentals of the Internet 2009/10. 1. Explain meaning the following networking terminologies:
Fundamentals of Internet Tutorial Questions (2009) 1. Explain meaning the following networking terminologies: Client/server networking, Coax, twisted pair, protocol, Bit, Byte, Kbps, KBps, MB, KB, MBps,
Astaro Mail Archiving Getting Started Guide
Connect With Confidence Astaro Mail Archiving Getting Started Guide About this Getting Started Guide The Astaro Mail Archiving Service is an archiving platform in the form of a fully hosted service. E-mails
Ciphermail for BlackBerry Quick Start Guide
CIPHERMAIL EMAIL ENCRYPTION Ciphermail for BlackBerry Quick Start Guide June 19, 2014, Rev: 8975 Copyright 2010-2014, ciphermail.com. Introduction This guide will explain how to setup and configure a Ciphermail
How To Create A Mailbox In Windows Mail On A Pc Or Mac Or Ipad (For A Mac)
Advanced Mailbox Email Software Setup Guide Advanced Mailbox Setup Guide Setting up an Advanced mailbox only takes a few minutes. You can set up any email software to send and receive email from your mailbox.