In an effort to further combat spam, we are now requiring IPs connecting to our mail servers to deliver mail to have Forward-confirmed Reverse DNS. This means when an IP connects to our mail servers, we'll first check to ensure that a Reverse DNS host name can be determined, and then an additional check to ensure that host name has an A record pointing back to the original IP will be performed.

A good article on Forward-confirmed Reverse DNS can be found here at Wikipedia



Esmaspäev, Märtsil 11, 2013





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