Enable OS X Server Messages (Jabber) account login from different domain

I have various Internet services like email, web and messages running on a Mini server running OS X on a subdomain.

Often, I want services like Messages to appear to use our main dot-com address, yet actually run on our internal dot-net domain.

So, how do I configure Messages server to appear to virtually function on our dot-com, yet still reside on a sub-domain?

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Firewall locked you out of screensharing on OS X?

Sadly, I had this experience lately. Even though I had the firewall explicitly set to allow connections using Screen Sharing, for some reason my Mavericks OS X 10.9 server hiccuped and I couldn’t access it via screen sharing.

Here’s how I resolved my dilemma:

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Fix SpamAssassin Error on Mavericks Server 3

Every once in awhile Apple’s shitty Server 3 throws errors that prevent SpamAssassin from processing new spam. The error shows up when I run spam trainer. The error it throws looks like:

Fix it by issuing these commands from Terminal:

Set up Mavericks Server 3 for email and train bayes spam filter

OS X Mavericks 10.9 Server 3 ships with SpamAssassin, but there are almost no controls available to admins (shame on you, Apple). Of course, a well-trained Bayes spam filter will cut down on annoying spam messages.

Thanks to the good folks at topicdesk.com, it’s super easy to set up the server for training the onboard SpamAssassin bayesian spam filter.

Here’s how:
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