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Server

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There are preset rules for the following servers:

PostCast SMTP Server

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Send mail by PostCast Server

Protocol: TCP
Direction: Outbound
Remote Port(s): SMTP (25)
Action: Allow It

What it's for

This rule is used by PostCast server to send mail. SMTP (Simple Mail Transfer Protocol) is used to send your mail direct to it's destinations POP server (by passing the need to use your ISP SMTP server) so that the recipient can then receive the mail.
More about SMTP
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PostCast Server HTTP connection

Protocol: TCP
Direction: Outbound
Remote Port(s): HTTP (80), 81-83, HTTPS (443), SOCKS (1080), 3128, 8080, 8088, 11523
Action: Allow It

What it's for

This rule is used by PostCast Server for checking for new versions and updates and downloading any found updates and for browsing the internet. HTTP (Hyper Text Transfer Protocol) is the only port you really need for browsing the Internet, ports 81, 82, 83 are auxiliary web browsing ports and are rarely used. HTTPS (Hyper Text Transfer Protocol over Secure Socket Layer (SSL)) is used when connecting to secure sites. SOCKS is only needed by people using a SOCKS proxy server. 3128, 8080, and 8088 are common ports that proxy servers use. If you use a proxy server for HTTP connections then it will probably be on one of these ports. 11523 is used by AOL's browser.

To optimize

Remove the remote ports: 81, 82, 83, and HTTPS unless you know that you need them. If you don't use a SOCKS proxy server remove SOCKS. If you don't use a remote or local proxy remove 3128, 8080 and 8088. If you don't use AOL's browser remove 11523.
More about HTTP
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Outpost and the Outpost logo are ©Agnitum Software

This is an unofficial guide, the information expressed here may differ from Agnitum's. There is a support forum (no longer run by Agnitum, but by users) if you need more help this is a good place to start. Where information here conflicts with what Agnitum have told you always go with the information given to you by Agnitum.

Guide/site and images ©Stephen Cox