Dear All, I am building a new server where I would like to build the best spam filter possible :) I am checking postscreen these days. I am planning to turn on the "deep tests" as well, but it seems to be really scary to me :)
In the doc they say that I can have 2 IPs and set up a secondary MX record and usually the sender will immediately connect back from the same IP. How good idea is it to do this ? What happens if the sender has a really big pool of IPs and they will not use the same IP when reconnect to the 2nd MX ? Theoretically it means that that sender will never be able to send mail to us right ? What is the best practice here ? I am curious for your opinions. Thanks, Mitya
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