Re: smtp defer messages on smtp-auth error
> One of our postfix servers relays outbound mails to a relay providerSee: http://www.postfix.org/postconf.5.html#smtp_reply_filter
> 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.
A rule like this might do the job.
/^535 text from ISP here/ 435 Authentication failed