Re: Relay access denied 454 not 544

[Wietse Venema]

M. Rodrigo Monteiro:
> Hi.
> I wanna know why Postfix is reject mail with temp error (4xx) and not 5xx
> for Relay access denied.
> 
> Here is the log:
> 
> May 27 12:11:34 XXXX postfix/smtpd[31197]: NOQUEUE: reject: RCPT from
> mx2.mydomain.com.br[XXX.XXX.XXX.37]: 454 4.7.1 <

Maybe the SMTP server has soft_bounce turned on.

Maybe the server has logged a DNS temporary lookup error prior to
this reject.

        Wietse