Kevin A. McGrail spake the following on 1/31/2007 12:24 PM: >> If you can't reject during the initial SMTP phase, then your NDR's of >> spam, >> with their possible forged envelope addresses, will also be spam. So, >> if you >> can't drop at the initial conversation, or it is relayed from a backup >> MX, it >> is your message, and your problem. Just don't generate NDR's. If you >> can't >> return at SMTP, you will need to drop it. > > We'll politely disagree because I am doing my best to reject mail > including having backup servers query primary servers for valid email > addresses but when the primary server is down, we MUST queue mail up on > our servers. If people choose to view that as us being the source of > SPAM, then they are negating the entire point of having backup MX's for > when stuff hits the fan. > > regards, > KAM Another option would be to have all the NDR's go out from a different host. That way, if and when it might end up on a blacklist, your primary server won't be stuck.
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