(sorry pushed the send button accidentally previously)
Take a look at http://www.postfix.org/postconf.5.html#unverified_recipient_reject_code
> man 5 postconf > > reject_unverified_recipientYes, i know this one exists. But i guess this one would reject mails with 5xx, when the foreign server tells me a 4xx message with quota problems. Am i wrong?
