Configuring Your Gateman Server

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1 Configuring Your Gateman Server Your Gateman Lifestyle Server includes an Server that provides users access to via an client and via your web browser using your laptop and mobile phone. Gateman Server Basics Within your Gateman Server configuration there are a few key topics that require explanation and discussion. These include: Receiving from the Internet Sending to the Internet Domains Settings for Blacklists and Filtering Users Receiving from the Internet Gateman s server can receive using 3 different methods: 1. Directly from the internet For this you will need to have a static IP address and Domain name. Gateman s SMTP server can then receive directly for the domain. 2. From a catch-all account held on a website on the internet Gateman can then log-in to this account and POP off the from this server and distribute it to the appropriate Gateman users. An example of this is when you have a domain name mybusiness.com and an Internet service provider hosts for your domain. 3. From a single user s account held at a website on the internet Gateman then logs-in to the individual account and POPs the for this user into an individual user s inbox within Gateman. An example of this is when you have an user myname@telstra.com.au on the domain telstra.com.au and you wish to get the mail for this user into the inbox of a nominated user within Gateman. Methods 1 and 2 are popular methods of getting within a business. Method 3 is more for home users and should not be attempted with a large number of individual user accounts. Sending to the Internet Gateman s server can send to the internet using 2 different methods: 1. Directly using its SMTP server When this method is selected, is sent directly from Gateman s SMTP server to the domain where the is destined towards; there is no other server in-between. Using this method, s sent from your system could be rejected or be received as spam if a. Your static IP address is provided by an ISP and your recipient has configured a DNS Blacklist Server that blacklists IP addresses given by an ISP. b. The IP address assigned to your Gateman server does not have a reverse DNS entry. This means that if the receiving party asks for the domain of the IP Gateman Integrated Security Configuring Your Gateman Server

2 address from which your mail is originating and the domain name supplied does not match with the domain you are sending for. 2. Relayed via an ISP s SMTP server When this method is selected, the is first sent to the account that is configured within Gateman, and relayed from there to the final recipient. This almost always guarantees that the will be received by the recipient. However it may still be flagged as spam, depending on the type of spam filter being used by the recipient s system and the contents of your . Domains Your Gateman Server can be configured to receive for multiple domains. Any s being received must be destined for one of the domains that are configured within Gateman, else the is rejected. Each domain can receive only for the domain it is configured for. Settings for Blacklists and Filtering Your Gateman Server has a number of settings to prevent spam together with stopping legitimate from being flagged as spam. It also has mechanisms for auditing all coming into and going out of the server, tracking and making copies of outgoing mail to safeguard your Intellectual Property and backing up your . Users Once your settings are configured, you may configure user s within your Gateman System. The maximum number of users that may be configured is determined by your license. In the event that you exceed the number of users, your Gateman module will be blocked. Information on the number of users that are licensed, configured and the status of the Gateman module can be viewed from the Dashboard screen accessed from the Administration -> Dashboard menu. Server Configuration To configure your Gateman Server, log in to your Gateman Client as an Administrator and go to the Administration -> MailServer menu. You will be provided with a window with buttons on the LHS providing various configuration options. Configuring Accounts This screen allows you to configure the Incoming and Outgoing accounts and the Domains used within your Gateman system. To open the Accounts configuration screen, click on the Accounts button. Gateman Integrated Security Configuring Your Gateman Server

3 Local Gateman SMTP Account This account is available by default with your Gateman Server and is used to receive s directly from the internet. To use this account to receive , the administrator must configure the domains that s will be received for. In the event there is more than one domain, separate each domain using a comma (e.g. mygateman.com.au,mybusiness.com). null indicates s from this account are distributed based on the User name. This table displays configured accounts. The receive row with the _null login displays the settings for the received by this Gateman server directly via SMTP (local account). This server name is the same as the Hostname configured in the Network Settings page. No login or password info is required for this local account. This checkbox is of no relevance for this local account. Configure the domains for which will be received directly by this Gateman server Fig: Local SMTP Account Gateman Integrated Security Configuring Your Gateman Server

4 External Incoming Catch-All Accounts To configure external accounts, one needs to click on the New button and work through the Wizard screens. Select the Receive radio button for an External incoming mail account. Fig: Step 1 Select Send or Receive This server name, login name and password are required to access the from the account and are the same that are configured within your client (e.g. outlook) when it accesses the remote account Fig: Step 2 Enter information for authentication Gateman Integrated Security Configuring Your Gateman Server

5 Domain name for which is received Check the box to delete mails that are read from the external account. Select Common for Catch- All accounts Fig: Step 3 Configure domain and misc info Once the account is created, it can be modified directly by selecting the required row from the table, and modifying the details from the fields below. null indicates s from this account are distributed based on the User name. This server name, login name and password are required to access the from the account and are the same that are configured within your client (e.g. outlook) when it accesses the remote account This row indicates an account that is received by an external provider on the Internet, and then POPed off the remote server by Gateman using the authentication details displayed below. Catch-all account Check this box to indicate the mail once read must be deleted from the remote server Configure the domains for which will be received for this Remote account. Fig: Modify Remote Account Gateman Integrated Security Configuring Your Gateman Server

6 External SMTP Relay Account Your Gateman system comes with its own SMTP server that is used to send to users on the internet. However as discussed earlier, based on the type of IP address your Gateman mail server is attached to, the sent mail may be flagged as spam or rejected. The local SMTP account is not displayed and is always available; it has a Priority of 5. Mails are using the account having the highest priority (0 is the highest and 10 the lowest), and in the event of a failure of the account, the one using the next highest priority. In order to configure an external SMTP Relay account, click the New button and work through the wizard screens. Select the Send radio button for an external SMTP Relay account. The priority determines the order in which the account is used Fig: Select the type of account This server name, login name and password are required to login to the account to relay the s, and are the same that are configured within your client (e.g. outlook) when it sends s using the remote account Fig: Step 2 Enter information for authentication Gateman Integrated Security Configuring Your Gateman Server

7 Once the account is created, it can be modified directly by selecting the required row from the table, and modifying the details from the fields below. This row indicates an account that is used to Relay to be sent to the internet. The authentication settings for the account are displayed below. Mail for all domains is sent using this account. This server name, login name and password are required to login to the account to relay the s and are the same that are configured within your client (e.g. outlook) when it relays s using the remote account The priority determines the order in which the accounts will be used to send . 1 is the highest priority and 10 the lowest. A local SMTP account (not visible in the table above) used for sending s, has a priority of 5 and will be used to send s if this account fails. Fig: Relay Using a Send Account Deleting an Domain In the event an domain is no longer required, then one can remove the domain entries from the account entry or delete the account entry. Thereafter one can cleanup the domain from the Administration -> Housekeeping -> Cleanup menu. DNS Blacklist Server To configure a DNS Blacklist server, click the DNSBL servers button. There are a variety of DNS Blacklist servers available on the internet, some of which are paid services if used commercially. The Spamhaus project is often used provide blacklist services to small to medium sized business with less than 300,000 DNS queries per day. Other DNSBL services are available on the internet. Gateman Integrated Security Configuring Your Gateman Server

8 This row indicates the DNSBL server in use. To add a new entry, delete the existing one and add another. Blacklist and Whitelist Configuration A variety of settings are available for identifying IP Addresses, Domains and addresses, from which s are received. Click on the required button to modify the existing settings. Valid Recipient Domains and Addresses Your Gateman Server allows you to restrict where s can be sent to. You can configure the set of valid Recipient Domains by clicking on the Recipient domains button, and the set of valid Recipient Addresses by clicking on the Recipient addresses button. You may then configure selected users to be restricted to sending s only to the selected addresses. Aliases Often one may require generic addresses redirected to one or more persons. This is typical in business that require addresses such as sales, info, support and such other addresses to be redirected. This may be configured by clicking on the Alias settings button as shown in the following screen. Gateman Integrated Security Configuring Your Gateman Server

9 Lists the existing alias addresses. To modify an address, select the required row and delete it, then add a new entry. Enter the Alias Name here, one or more recipients (comma separated), then click the Add button. Configure Spam Settings Click the Spam settings button to modify these settings. Gateman uses Spam Assassin to battle spam. Specify the score above which is moved to the Junk folder. Specify the max size of to be tested for spam (spammers send small s) Specify the time to spend checking the . Check to perform checks using the internet. Click this button to reset the spam database built. Gateman Integrated Security Configuring Your Gateman Server

10 Configure Misc Settings These settings can be accessed by clicking the Miscellaneous button. If you have 10 users connecting via IMAP you may require 3 threads. Increase the number of threads on a pro-rata basis. Check to enable Gateman s server Wait minutes between external mail fetches Select the interfaces on which to start the server Max message recipients Check to enable connections on the Internet interfaces for these client functions. Max number of threads opened on the corresponding port waiting to receive connections simultaneously. Configuring Users After configuration of your Gateman Server and other Gateman modules (e.g. Devices, Access Control and Attendance, File and Http Proxy Server), you need to define the users and assign them to various groups. This is done from within the Administration -> Users menu. Please refer to the relevant document for additional details. For each configured user, the administrator may configure: Whether the user has access to Gateman s Server The name by which will be addressed to this user by The max size (in megabytes) of all mail boxes within all domains for this user. Whether this user is a postmaster. A postmaster will receive all unaddressed , as well as be sent copies of s sent by Logged users. Whether to Log this user s Sent mail Whether to restrict where this user sends to. If restricted, this user may send to only those domains and addresses defined in the Recipient Domains and Recipient Addresses settings. Gateman Integrated Security Configuring Your Gateman Server

11 The following screen shows the Server user-based settings Check to allow the user access to the Gateman s Server Check to make the user the postmaster Check to send a copy of this user s to the postmaster. Enter the name that mail will be addressed to this user by (exclude the domain) Set the max size of the box (in megabytes) used to hold all (in all domains) for this user Check to restrict the user s recipients to those specified by the Valid Recipient Domains and Addresses Virus Scanner Your Gateman Server includes the widely used ClamAV based engine for Virus Scanning. This virus database is updated automatically on a daily basis from the internet. Changes to the virus scanning engine are also periodically made by the developers. These changes are compiled at our lab and uploaded to our web server from which your Gateman server is automatically updated. Configuring Global Filters Every user may access Gateman s Server via an IMAP Client (e.g. Outlook, Thunderbird, etc) or using Gateman s Web Browser interface. Within the web browser interface, the menu provides a Mail Filters menu option through which they may configure filters on incoming . Your Gateman Server has a special reserved admin user. Any filters that are configured against this admin user, get applied to all other users (provided the mail boxes [if relevant to the filter] are defined within the user s setup. Gateman Integrated Security Configuring Your Gateman Server