[Exim] how to: safely add a Message-ID-header?

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Author: Jochen Erwied
Date:  
To: exim-users
Subject: [Exim] how to: safely add a Message-ID-header?
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Currently I'm facing a problem which I didn't find explained.

I'd like to add a Message-ID:-header to remote mails if it is not present.

The reason for this is that some newsletters don't come with ID's, but
procmail is used to filter out duplicates by Message-ID, which does not
work with empty ID's. So I'd like to have them added at SMTP-time, or as
early as possible inside routers (all external mails get passed through
amavis for virus scanning).

Any suggestions how to accomplish this? Or any configuration option I
missed?

Thanks.

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Jochen Erwied     | home: jochen@???     +49-208-38800-18, FAX: -19
Sauerbruchstr. 17 | work: joe@???  +49-2151-7294-24, FAX: -50
D-45470 Muelheim  | First sightings... <1672@???> 1989/10/11 18:06
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