Re: [exim] RFC's and DNS?

The best way I've found to explain it is to say that they're triggering your spam filters because their machine looks like a spam zombie because its name cannot be verified. But most of them really don't care and refuse to fix their servers. One of our clients has a machine that HELO's with "exchange-server.LAN" and they claim that any problems are on my end.

>>> "j2" <spamfilter2@???> wrote on 08/29/05 05:16AM:
> I am trying to explain to a company (and a very large one at that) that
> is
> might be a good idea to provide DNS-entries for their mail handlers
> (that
> are co-located at a not-so-big-and-pretty-clueless-co-loc-provider).
>
> I get tons of "Bad HELO, host does not resolve" (Paraphrased of cource)
> in
> my logs, and my fiancée can not mail me, and as she says "Tons of mail
> to
> our customers comes back with the same error message, and our
> IT-department
> is adamant in saying that it is not our problem".
>
> So, is there in fact a good RFC here, or is not accepting mail from
> non-resolving hosts a pretty bad idea?



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