Halassy Zoltán schrieb: > When a server rejects an e-mail address with 5xx, mine rejects it only > with 4xx. But! I would like to reject them with 4xx if the foreign > server sends 4xx, or unreachable, DNS failures etc... Is this possible?
Take a look at http://www.postfix.org/postconf.5.html#unverified_recipient_reject_code
