Hi, as every MTA-Software uses other Templates for these kind of bounces, there is not "one" header you can use for this kind of filtering. We use the vbounce rule from spamassassin, which adds *BOUNCE_MESSAGE entries to the header X-Spam-Status to filter these kind of backscatter. http://wiki.apache.org/spamassassin/VBounceRuleset Quoting Marc Grober <marc@xxxxxxxxxxx>: > I am getting pounded by backscatter as a result of one of my addresses > being used by some major spammers. Are there any solutions available to > address all the Delivery failure and bounce notices. I would at least > like to be able to sort between such responses from mail I am actually > sending and the backscatter. I have looked through headers and nothing > seems an obvious candidate. -------------------------------------------------------------------------------- M.Menge Tel.: (49) 7071/29-70316 Universitaet Tuebingen Fax.: (49) 7071/29-5912 Zentrum fuer Datenverarbeitung mail: michael.menge@xxxxxxxxxxxxxxxxxxxx Waechterstrasse 76 72074 Tuebingen ---- Cyrus Home Page: http://cyrusimap.web.cmu.edu/ Cyrus Wiki/FAQ: http://cyrusimap.web.cmu.edu/twiki List Archives/Info: http://asg.web.cmu.edu/cyrus/mailing-list.html