On Fri, 13 Nov 2009, lst_ho...@kwsoft.de wrote:
> as far as i know Postfix does not alter a Message-ID beside when it
> creates a missing one.
There is more to it since the release of 2.6. From RELEASE_NOTES:
Major changes - header rewriting
--------------------------------
[Incompat 20090330] Postfix now adds (Resent-) From:, Date:,
Message-ID: or To: headers only when clients match
$local_header_rewrite_clients. Specify "always_add_missing_headers
= yes" for backwards compatibility. Adding such headers can break
DKIM signatures that cover headers that are not present.
compatibility with existing logfile processing software, Postfix
will log ``message-id=<>'' for messages without Message-Id header.
> Is there some way one could find out later in the logfile if Postfix
> has created one? Is it sufficient if the Message-ID looks like
> "<some-long-numbar>@<my-mailrelay-hostname>" or is there some other
> thing to check?
When adding a missing Message-Id: header, the cleanup(8) service uses
the queue file creation time (in GMT), the queue ID and $myhostname.
For example:
message-id=<20091113223127.8814b17...@mailin.kwsoft.de>
^^^^^^^^^^^^^^ ^^^^^^^^^^ ^^^^^^^^^^^^^^^^
time in GMT queue ID $myhostname
--
Sahil Tandon <sa...@tandon.net>
