Changes

[[Image:Email-access.png]]

[[Image:Email-access.png]]

* 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.

* POP and IMAP server access: The options are "Private" and "Secure Public". The former allows access only from your local network. The latter allows access from anywhere on the Internet over secure https.

{{Note box|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:<br />

{{Note box|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:<br />

   a. use the STMP server of their local ISP;<br />

   a. use the STMP server of their local ISP;<br />

   a. use PPTP to connect to your internal network; or<br />

   a. use PPTP to connect to your internal network; or<br />

   a. use webmail to read their mail.<br />

   a. use webmail to read and send their mail.<br />

}}

}}

* Enable/Disable Webmail: With this option you can enable or disable the webmail component of your server. More information can be found in|Chapter 16. Webmail.

* Enable/Disable Webmail: With this option you can enable or disable the webmail component of your server. More information can be found in Chapter 16. Webmail.

=====E-mail Filtering=====

=====E-mail Filtering=====