On Mon, 2004-01-26 at 07:45 +0100, Jochen Erwied wrote:
> --
> 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.
You can add a Message-ID as Exim before 4.30 would have done, with
something like the following in a DATA ACL:
warn condition = ${if !def:h_Message-ID: {1}}
message = Message-ID: <E$message_id@$primary_hostname>
> 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.
But you will get _unique_ Message-ID headers from the above -- there
won't be any duplicates if you receive the same message twice from a
remote host; only if you receive one message to multiple recipients.
--
dwmw2
