On Fri, Sep 16, 2005 at 01:25:39PM -0700, John W. Baxter wrote: > On 9/16/05 2:54 AM, "John Burnham" <[EMAIL PROTECTED]> wrote: > > On 15/09/05, Jamie Nudds <[EMAIL PROTECTED]> wrote: >>> I have exim 4.50 server that posts emails to a newsgroup server (innd) via >>> mailpost. However when Outlook users email to the newsgroup it is rejected >>> with the reason "no Message-ID: found". I can't see any option in the >>> innd conf files to stop this. >> Well, you could always get Exim to add message-ids to those messages >> without them - stick something like [...] > Which in turn is part of what > control = submission > does (it also supplies missing From: and Date: headers which are the two > required headers). [...] > Message-Id: (per RFC2822) is optional but SHOULD be present. I guess that > is "less optional" than the just plain "optional" headers are. Fortunately, > almost every message we see in our corner of the world does have a > Message-Id: header. (Unfortunately, some we generate ourselves don't > (yet).)
Message-ID is used by NNTP to de-dupe in propagation, it is therefore a required part of NNTP. It would have been useful in mail-to-news and for other reasons if they'd made it a required part of the standard for mail transfer too, but they didn't, so we have to live with it. It is also used by netnews in the References: header to generate the thread tree. In the case of this mail-to-news gateway, I'd say it should be adding message-id headers for the things it's going to mail-to-news where they don't already exist. This does cause you problems with threading and references, but... Hope this clears some things up - you shouldn't be looking to turn off messageid processing in inn. Cheers MBM -- Matthew Byng-Maddick <[EMAIL PROTECTED]> http://colondot.net/ (Please use this address to reply) -- ## List details at http://www.exim.org/mailman/listinfo/exim-users ## Exim details at http://www.exim.org/ ## Please use the Wiki with this list - http://www.exim.org/eximwiki/
