Hi !!
> (1) Exim currently gives a 4xx response if the callback times out. If o=
ther
> MTAs do not retry after this response, that is their problem, not mine.=
> (In Exim 4, the response will be after the first RCPT; perhaps they wil=
l
> behave better on that.)
I had problems with some mailers (IMail v6.05) which failed to send the m=
essage
after 12 tries. This is very strange as I only get one try on my logs and=
the
time between the message was written adn the time of the fail it was only=
a
few hours. The fact is that makes my server to refuse emails from valid a=
drresses
which in unacceptable for my clients. I had to deactivate it to stop comp=
lains
from my customers but I would like to have it activated in a way that doe=
s not
compromise email reability because it filters a lot of spam.
> (2) "Noted" means "I'll think about it". As it happens, I was thinking
> about this stuff for Exim 4 today. It seems to me not be be a very good=
> idea because once the spammers discover this, all they have to do is to=
> set a return address that resolves to a domain that times out.
If you make this an option it will be a matter of choice, like other opti=
ons =
related to checks, you can refuse it or you can simply accept the email a=
nd =
log the fact that the server times out, then you can check the logs to se=
e
which servers timeout everytime and configure exim to simply reject email=
from that servers. Spammers will always find a way to spam but it's not =
necessary to harden email servers in a way that can compromise the user's=
need for a fast a reliable email server.
--
Thanx & best regards ...
----------------------------------------------------------------
David Saez Padros e-mail david@???
On-Line Services 2000 S.L. =
Trafalgar 78 2=BA 2=AA B voice +34 93 315 15 93
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http://www.ols.es fax +34 93 268 35 90
http://www.ols.es/~david/ =
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