I followed the tutorial The Perfect Server - Ubuntu 10.04 [ISPConfig 3] verbatim and I'm pleased to say the process has been far less painful than I imagined (first time Linux server). I have been developing my website locally for a few days now and now that my domain name is done propagating and pointing to my server, I want to make sure I get everything ironed out. I can receive emails fine, but I am unable to send any emails via squirrelmail. During the tutorial, I told configured squirrelmail to use courier. My ISP is not blocking ports 25, 110, 143 and these ports are properly opened in my router. I have an email domain set up with the following settings: Server: server1.domain.tld Domain: domain.tld Spamfilter: Not enabled I have a mailbox set up with the following settings: firstname.lastname@example.org Spamfilter: Not enabled Enable Receiving [yes] Also, far as control panels go, I'm used to CPanel where it spells out the correct IMAP / POP3 login information for you. It is my goal to be able to access my email via IMAP, but I don't know what the correct settings would be for my particular [default] case (e.g. Incoming IMAP Server, Outgoing SMTP Server, etc). I'm also interested in figuring out how to enable TLS. One last issue worth mentioning is the fact that I cannot access squirrelmail via domain.tld/webmail, so for testing purposes I have just been using 192.168.x.x/webmail. Using the former brings me to a ISPConfig 404 page. Thanks in advance! Excellent site and guides.