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2006-03-06 16:58:26

At 12:56 PM +0000 2/23/06, Tony Finch wrote:

 For example, it's common to have dual-purpose MSA
 and MX servers which operate in MSA mode after AUTH and MX mode otherwise.
 If the client pipelines an AUTH and an intended submission, but the auth
 fails, bad things will happen - recipients will be rejected that would
 have been OK, an incomplete message will suffer an anti-spam penalty
 instead of being fixed up, etc.

Another reason to stop running dual-purpose servers on port 25, and restrict 25 to message relay, and use port 587 for message submission. It makes the client's intent much more clear.
Randall Gellens
Opinions are personal;    facts are suspect;    I speak for myself only
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"Contrariwise," continued Tweedledee, "if it was so, it might
be, and if it were so, it would be; but as it isn't, it ain't. That's

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