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Re: master.debian.org randomly deferring mail

Emile van Bergen <emile-deb@evbergen.xs4all.nl> wrote:
> On Sat, Apr 05, 2003 at 02:11:17PM +0200, Josip Rodin wrote:
>> To quote the documentation,
>> Exim insists on there being at least one verifyable address in one
>> of the "Sender:", "Reply-To:", or "From:" headers (which are
>> checked in that order) on all incoming SMTP messages. If one cannot
>> be found, the message is rejected, unless "headers_checks_fail" is
>> unset, in which case a warning entry is written to the reject log.

> The big question is, what is a "verifyable address" in this context? As
> in 'domain must have MX or A record'? As in 'VRFY', i.e. primary MX's
> MTA must not reject?

| The check is performed by running the same verification code as is
| used when Exim is called with the -bvs option, that is, by running
| the directors and routers in verify mode.

Exim checks whether it would know how to deliver a mail to
@remote-part. For the usual "internet-site" doing direct SMTP
deliveries (like master.debian.org) this would mean checking for MX
or A record, a satellite systeme might only lookup the IP of the
              cu andreas

Hey, da ist ein Ballonautomat auf der Toilette!
Unofficial _Debian-packages_ of latest unstable _tin_

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