Thread: Zimbra 5 install on CentOS 5 / MX Record
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Old 03-25-2008, 07:48 AM
Bill Brock Bill Brock is offline
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Unchecking DNS checks will open up the mail server to a lot more spam. DNS checking blocks 80% of the spam trying to come into my mail server.

It's best to follow the RFC's for setting up a mail server and its DNS. Then everybody wins.
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