I totally agree with you Andrew,
Some weeks ago I asked this list the same question as you.
If we get our mails at trash it's not our decision, his server has given as an
OK for delivery. His/her spam software should be reconfigured to accept mail
from you or his MTA should complain at SMTP time. If we get an OK for
delivery we're not guilty if that message is missed.
Exim has the possibility to check senders trying to deliver a message and
expecting RCPT OK. It would be nice to use this technique to first try to
deliver directly and if we get an 5XX code after RCPT continue with next
router.
Some people recommend switching to IP fixed address, but some time ago spamcop
also complained of fixed ADSL addresses...
A Dimecres 15 Juny 2005 16:24, Andrew McGill va escriure:
> Chris Edwards wrote,
>
> > | We want to deliver outgoing mail with the following strategy:
> > |
> > | 1. Attempt to deliver mail directly to destination.
> > |
> > | 2. If (1) fails for *any* reason (452 DNS blacklisted, 550 DNS
> > | blacklist, DNS failure, or TCP timeout) then treat this as a
> > | temporary failure and retry immediately using the ISP mail
> > | spooler.
> >
> > Hi,
> >
> > As discussed yesterday, the fundamental problem is many sites
> > will accept your mail (2XX) and then deliver it into a spam
> > folder, which the user may or may not read in a timely manner,
> > or indeed, at all. You have no way of knowing if this has
> > happened.
>
> These people are breaking the rules, and eventually all of their
> mail will end up in the trash (along with their expensive
> software). I simply want to be able to retry a 550 Permanent
> Failure code at my ISP.
>
> > Best to get a real server:
>
> I have one already, but this means paying 3 times for the
> bandwidth: once out from dynamic IP, once in to server, and once
> out from server. Unlike yours, our packets have to walk through
> the valley of the shadow of monopoly telecoms.
>
> &:-)
--
Agustí Rivero
xarxes@???
Telf. 902 36 14 84
Ilimit Comunicacions
