Mountain Lion Server - reverse DNS rule for email - reduce spam

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Mountain Lion Server - reverse DNS rule for email - reduce spam

Using Mountain Lion server. Email is up and running. Slide rule for SPAM is slid to most agressive. Still spam is coming in too much.

I thought I would try using the Reverse DNS enforcement but I do not know where that is in the GUI. If it not there I need to know where best to set it.

(Is there some web site that has Mountain Lion Server documentation?) I have pre-ordered a book but it is not printed yet.....

I posted this here after being told this group might be more appropriate.

thanks for any help

Ben

Mac mini Server (Mid 2011), OS X Server, email server

Posted on Aug 23, 2012 11:38 AM

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Answer 1

Aug 23, 2012 12:11 PM in response to jbt540

You are referring to HELO checks. This cannot be set in the GUI (never has been actually). You need to edit /etc/postfix/main.cf. In particular, smtpd_helo_required and smtpd_helo_restrictions are the values you need to tweak. *******Check the Postfix documentation before changing anything. Be sure you understand it. ******** Note that although HELO checks miniminize spam quite a bit, you will occasionally end up blocking legitimate mail. It's a trade-offf.

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