Mail is one of the hardest services to manage. Actually, mail is pretty simple in and of itself: there’s protocols people use to access their mail (such as IMAP and POP), protocols used to communicate between mail servers and send mail (SMTP, SMTPS) and then there’s a database of mail and user information. In OS X Server 5 for El Capitan and Yosemite, all of these are represented by a single ON button, so it really couldn’t be easier. But then there’s the ecoysystem and the evil spammers. As a systems administrator of a large number of mail servers, I firmly believe that there is a special kind of hell where…
-
-
Configuring Spam Assassin In Mac OS X Lion Server
The built-in message hygiene in Lion Server is provided by Spam Assassin and clamav (amavis). Lion Server’s Server Admin application has an easy-to-use way of configuring some of the more basic settings for Spam Assassin. Spam Assassin’s rules are configured in /etc/mail/spamassassin/local.cf. If you open this into a standard text editor then you can insert blocks that are rules. Each rule has the ability to either locate text within a header (such as an email address), a subject or in the text of an email. To use Spam Assassin to block messages that have the word viagra in them, for example, you would insert the following block: body NO_MORE_VIAGRA /viagra/i…