* Thomas: > Wie soll ich dann als Absenderadresse zum Ausdruck bringen das ich > keine Email rply wünsche.
One of the simplest solution is sending mail with From: Thomas Mustermann <nore...@domain.tld> with the address nore...@domain.tld being *unknown* on your MX. That should result in a generic 5xx rejection. If you want more control over the rejection message, you can use something like the following: # /etc/postfix/main.cf smtpd_recipient_restrictions = ... check_recipient_access pcre:/etc/postfix/recipient_access ... # /etc/postfix/recipient_access /^noreply\@domain\.tld$/ REJECT No replies please You can of course use a Hash type map instead of PCRE, this is just an example. -Ralph