I do not know if this may be the case or not, but check the headers of the email for the Return-Path header, and also compare the headers when sent from 'nobody' and from a user on the system. Doing so may give you more insight as to the particular portion being seen (and rejected) by their mail server.

Hope that helps.

In reply to Re: Using "nobody" to send e-mail by atcroft
in thread Using "nobody" to send e-mail by db2admin

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