Chapter 11. Configuration
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Internet provider’s SMTP server: Normally the server will send outgoing messages directly to their intended destination. If,
however, you have an unreliable connection or are using a residential Internet service, it may be advisable to route e-mail via your
provider’s SMTP server. In that case, you should enter the SMTP server’s hostname or IP address here.
In fact, if you have a temporary dial-up connection to the Internet, you may find that you need to use your ISP’s mail server in
order to deliver mail to some locations. As a reaction to the huge volume of unsolicited commercial e-mail ("spam"), many
Internet sites are refusing direct SMTP connections from IP addresses that are known to be temporary dial-up accounts. For this
reason, you may need to use your ISP’s mail server since it will have a permanent connection to the Internet.
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POP and IMAP server access: The options are "Private" and "Public". The former allows access only from your local network.
The latter allows access from anywhere on the Internet. Think about this carefully. On the positive side, choosing "Public" access
allows any of your users to retrieve their e-mail via POP/IMAP from anywhere on the Internet. The negative side is that when you
do this, you are reducing your level of security, as you will now have two more services (POP and IMAP) that are listening for
connections across the Internet. Both protocols also involve transmitting your password across the Internet in plain, unencrypted
text, opening up the possibility that someone could intercept the packets and learn your username and password. Allowing such
access can be a great convenience to your users, but if security is a concern you should consider using encrypted webmail instead.
IMPORTANT: Even with POP and IMAP configured for public access, users outside your local network are not able to send
e-mail using your server as their SMTP host. Allowing this would open your server to abuse by spammers as a mail relay. Users
who are travelling should either: a) use the STMP server of their local ISP; b) use PPTP to connect to your internal network; or
c) use webmail to read their mail. Webmail provides your users with secure access to both read and send mail via your server.
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Enable/Disable Webmail: With this option you can enable or disable the webmail component of your server. More information
can be found in the Webmail chapter.
11.8. Review Configuration
This section of the server manager summarizes how your server is configured. This is the data that you entered during the installation
process and possibly changed later through the server console or the server manager. As you can see from the screen below, this is
essentially a report that you can print out for your records. You do not have the ability to make changes from this screen.
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