On Tue, 21 Oct 1997, Alan Thew wrote:
> 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....?
I've been blocking MAIL FROM addresses that fail to resolve for over 5
years - long before I started to write Exim. However, it has never been
acceptable here to drop mail on the floor.
> mail from:<user@badly_configured_mta.com>
*should* be rejected, IMHO, because doing so avoids more problems in the
long run. If you accept such addresses and your user replies, *your*
postmaster gets bothered when it doesn't work. If you reject it in the
first place, then postmaster@badly_configured_mta.com gets bothered by
the sending user, which is as it should be!
[Of course, things don't always work out like that. What often happens
is that sender phones up receiver and says "I can't get mail to you;
what's wrong with your site?", so your postmaster gets bothered anyway.
Sigh.]
--
Philip Hazel University Computing Service,
ph10@??? New Museums Site, Cambridge CB2 3QG,
P.Hazel@??? England. Phone: +44 1223 334714
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