[Mailman-Users] Analysis of reasons for bounce responses

[Brad Knowles]

At 7:32 AM -0700 2003/08/02, JC Dill wrote:

>  This is a big clue that the MTA is improperly configured and is
>  trying to deliver to the AOL and Hotmail servers messages for
>  more recipients than those systems allow - triggering anti-spam
>  filtering on the recipient MTA at AOL and Hotmail.  The messages
>  are then bounced.

	A properly written MTA should automatically handle issues like 
this and re-split the envelopes as necessary.  Sendmail will do this, 
as will postfix.  Dunno about Exim.

	I think the problem lies somewhere with a locally screwed up MTA 
which periodically won't respond at all, or can't get to its local 
DNS, so stuff bounces when it shouldn't.  But I can't be sure.

-- 
Brad Knowles, <brad.knowles at skynet.be>

"They that can give up essential liberty to obtain a little temporary
safety deserve neither liberty nor safety."
     -Benjamin Franklin, Historical Review of Pennsylvania.

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