[solved] Mail setup pop, smtp, blah blah blah

[kilburn]

Spamassassin should always be down (in fact, you can remove it through the configuration settings and forget about it).

AMaVis has to be manually installed if you want it (there is a great thread about it from rbtux, use the forum search function).

Pop3-ssl is not enabled by default, because right now ispcp doesn't support SSL in any of it's services (it can be manually enabled tough, look at the documentation wiki).

Now, your problem sending/receiving from external mail clients concerns smtp (postfix) and pop3/imap (courier) respectively. Which error message do you get when trying to send? And when trying to receive? Please include the relevant lines from the /var/log/mail.log file too, showing the connection tries...