4xx vs 5xx for spam rejects

Subject: 4xx vs 5xx for spam rejects
From: Michael Sobolev (msstransas.com)
Date: Mon Dec 20 1999 - 04:51:37 CST

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The quiestion is quite simple. Are there any recommendations on when to use
5xx codes for spam? I have a problem here. Few hosts are trying to deliver
spam messages (I do know this is spam) after receiving 4xx code. I would
easily tolerate that, but they are trying to deliver the messages every minute
and I am not sure whether they have time limit of any kind: one of the hosts
tried to deliver the message for 10 days (until, I just ipchained it away!).

So what are you suggestsion?

Thanks,

--
Mike

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