Loading the headers and/or the body with additional clues as to the original recipients and lists are is good... but some brain dead MTAs will still carefully anonymise the bounce messages - some do it so effectively you feel it has to be deliberate :-(

Nigel.

-- [ - Opinions expressed are personal and may not be shared by VData - ] [ Nigel Metheringham Nigel.Metheringham@VData.co.uk ] [ Phone: +44 1423 850000 Fax +44 1423 858866 ]