Hat jmd diese Meldung schon mal gesehen

oder weiss in welche Richtung ich schauen muss :-/
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An: MAILER-DAEMON@abc.com
Kopie:
Von: Postmaster@abc.com
Datum: 28.01.2002 14:55:16
Thema: DELIVERY FAILURE: Enhanced Mail System Status Code (RFC1893): .0.0
Your message
Subject: Undeliverable mail: ...... was not delivered to:a.b@c.com
because:
Enhanced Mail System Status Code (RFC1893): .0.0
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Silke ratlos wie immer
