Stefan Palme wrote: > Now I want a special authenticated user to be allowed to send > mails with an "unknown recipient domain". Is this possible? > > (The reason for this strange requirement is, that this "user" > is a software product. This software delivers its mails via > the local SMTP server. When it tries to send emails to an invalid > domain, postfix should not reject this email during the internal > SMTP communication. Instead I want it to accept it and create > a bounce message to the original sender).
I can think of a few ways. If the software is running on the same machine, you could add a check_sender_access table before the rejections to permit it. You could move permit_sasl_authenticated higher, but that's probably undesirable. A special instance of smtpd in master.cf, as suggested, is also good. There might be a "proper" way to do this, using the authentication credentials at an earlier stage, but I can't claim to know.
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