Ram: > One of our postfix servers relays outbound mails to a relay provider > using smtpauth. > There have been some issues that sporadically the relay providers > database returns auth-failure for valid accounts and the mail bounces. > > I know they have to fix the issue at their database end , but can I > configure my postfix to defer mails if authentication fails , rather > then bouncing them. For any other rejection , obviously, the mail has > to be bounced back.
See: http://www.postfix.org/postconf.5.html#smtp_reply_filter A rule like this might do the job. /^535 text from ISP here/ 435 Authentication failed Wietse
