Author: John W. Baxter Date: To: exim-users Subject: Re: [Exim] Opinions sought: Most effective spam reduction
techniques
On 8/19/2004 18:27, "Kjetil Torgrim Homme" <kjetilho@???> wrote:
> On Tue, 2004-08-17 at 14:06 +0100, Jethro R Binks wrote:
>> This caught my eye, because it was brought to my attention just recently
>> that Outlook 2003 stopped adding a Message-ID header to Internet email.
>
> a twist on this: we have an external researcher who can't send e-mail
> to our users since all his messages contain
>
> Message-ID:
>
> yes, a blank ID. we don't reject this, but when it reaches Cyrus, it
> will do duplication elimination based on the (msgid, folder) tuple, so
> any subsequent messages are silently dropped.
>
> I think it would be better if we rejected such e-mail messages, but I
> haven't had time to update the configuration yet.
Either reject them, or ***shudder*** rewrite the bogus Message-ID: header
with a valid one, for that particular sender. I'm not sure which would be
better...depends on how likely the external researcher is to be able to fix
the problem on his end, I guess.
