stefan jakobs uwhaswtmavslrusunistuttgartde tuesday 12 february 2008 2019 james wrote stupid question pretty easy someone answer whats conf line setting blacklist recipient addresses postfix instance odgovlxxmydomaincom mailbox doesnt exist want mailserver reject soon someone tries send address relay server dont want checking mailboxes want make simple list mail addresses reject delivery im thinking something like hashetcpostfixsender_access smtpd_recipient_restrictions check_sender_access sender_access odgovlxxmydomaincom reject kqpixrkktgdmydomaincom reject ywcvgrdlkkcvjojmydomaincom reject postmap sender_access right want check start anything use something like smtpd_recipient_restrictions check_recipient_access hashetcpostfixrecipient_access etcpostfixrecipient_access ervvdomaintld reject blacklist addresses exist maybe helps etcpostfixrecipient_access domaintld reject_unverified_recipient see also httpwwwpostfixorgaddress_verification_readmehtml tia james greetings stefan wed 06 aug 2008 041253 0100 blacklisting recipient address