Re: [Exim] localhost as SMTP server again: Dynamic IP adress…

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Autor: Christoph Kliemt
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A: exim-users
Assumpte: Re: [Exim] localhost as SMTP server again: Dynamic IP adresses being blocked
Toralf Lund <toralf@???> writes:

> There is of course a different, perhaps more serious, problem with using
> localhost as SMTP server setting in the MUA (see previous thread): It
> could mean that dynamically assigned IP addresses are listed in
> Received, and some receiver's don't like that; they block all messages
> from addresses in dynamic ranges, at least if they belong to a major
> ISP.


No. They are blocked by RBLs, not by mailheader.

> I'd be interested in hearing how other people address this issue. Is
> there a way out of it at all, except from obtaining a fixed IP address
> from the ISP, or send messages via their mail server by reconfiguring
> the MUA e.g. after moving a machine from the office to an Internet
> connection @ home?


Our mailserver (fixed ip) does not accept eMails from DULs (knock on
wood) since 60% to 80% SPAM come from DULs.

So my advice is: get a fixed ip with correct DNS-entries, or use an
"official" relay with "ESMTP AUTH" or "SMTP after POP".

hth christoph