Author: Tim Jackson Date: To: exim-users Subject: Re: [Exim] permanent failure for spam
On Wed, 5 Nov 2003 14:30:13 +0000 (GMT) Alan wrote:
> Incidentally, what does the team think about mails which are offered
> without their own message-id - are they ever bona fide?
Although I don't have any empirical data, I have a feeling I asked myself
the same question a while ago, investigated a bit, and decided that the
answer was "yes, occasionally, and enough that I wouldn't want to reject
based solely on the lack of a Message-ID, but a substantial majority are
spam".
SpamAssassin has a few tags to identify added-in-transit (including at
endpoint) Message-IDs:
