[repost] sender_*_verify and coping with bad but non spam MT…

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Autor: Alan Thew
Data:  
Para: Exim List
Assunto: [repost] sender_*_verify and coping with bad but non spam MTAs... (fwd)
At the wish of `oh not again' ... Philip has already replied and
personally I cannot agree more however if I need to be more `flexible' I'm
not sure how to keep things reasonably tight but at the same time reduce
the number of false positives...

Have other people used the sender_ directive that says ignore certain
networks to any effect?
Yes I know that broken MTAs should be fixed etc....

Thanks.

--
Alan Thew                                       alan.thew@???
Computing Services,University of Liverpool      Fax: +44 151 794-4442


---------- Forwarded message ----------
Date: Tue, 21 Oct 1997 12:14:14 +0100 (BST)
From: Alan Thew <qq11@???>
To: Exim List <exim-users@???>
Subject: sender_*_verify and coping with bad but non spam MTAs...

When we set up our first (PP) hub (quite a while ago) we followed the
maxims of RFC 1123 and were very liberal in what we accepted... times
have changed and there are quite a number of sites and senders where we
don't want to accept anything.

The trick seems to be in getting

mail from:<12345@???>

rejected

but not

mail from:<user@badly_configured_mta.com>

where the From: field is valid.

What are people's experiences, especially at large sites where it's not
always possibly just to block anyone or drop mail on the floor, like
Universities....?

Thanks

--
Alan Thew                                       alan.thew@???
Computing Services,University of Liverpool      Fax: +44 151 794-4442




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