I know Piru, and I really don't want to give them feedback, afterall this is what they're looking for.
But sending a mail to my POP server at an non-existant user, I get a "user unknown" notice, with all the needed info in the headers.
I thought that using this mail responce as a template and exchanging string variables (as the date, the sender's domain/address etc.) might do the work.
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Xs750