How to recognize out of office replies:

Subject:

    Domino:
	Subject: Kattnig, Thomas is out of the office.
	Subject: Guenter KARNER/OEVAG/AT ist außer Haus. Betreff: WIFO-Presseaussendung
	Subject: Michael Böheim ist außer Haus.
	Subject: Gregor HOEPLER/RZB/AT ist nicht im Büro.


    Unknown:
	Subject: Out-of-Office

    Exchange: 
	Subject: Out of Office AutoReply: HP P24 / Zusammenfassung der Besprechung vom 7.2.
	Subject: Out of Office AutoReply: Server sind schon da





    No Re: or AW: or Antwort: or similar.

No In-Reply-To or References header.


Lotus Domino Message-ID:

    Message-ID: <OF872A9C17.A60D5260-ONC1257299.002B3860-C1257299.002B3860@oevag.volksbank.at>
    Message-ID: <OFB7261FC2.8B2268F6-ONC1257299.002B8404-C1257299.002B8404@ispn.edvgnet.at>
    Message-ID: <OF2164AFD9.A46ECA52-ONC1257296.00739996-C1257296.00739996@wsr.ac.at>
    Message-ID: <OF1A2CC852.EB49DDA6-ONC1257281.00624418@mdcs.at>



Possibly an X-MIMETrack header:

    X-MIMETrack: Serialize by Router on Jekyll/WSR(Release 7.0.1FP1 | May 25, 2006) at 03/06/2007 10:02:43 PM


Possibly Precedence: bulk header


MS-Exchange stuff:

    X-MS-TNEF-Correlator:
    Thread-Topic: HP P24 / Zusammenfassung der Besprechung vom 7.2.
    Thread-Index: AcdQFc6V4xNctQBmR0eknH0BdLkZdwAAAAco

    (but not always)