access_map_reject_code (default: 554)

The numerical Postfix SMTP server response code when a client is rejected by an access(5) map restriction.

Do not change this unless you have a complete understanding of RFC 821.

=> http://www.postfix.org/access.5.html



Scott Lowe wrote:

> I am a newcomer to Postfix, so this is probably an easy question to answer.
>
> Postfix is acting as a mail gateway to an internal mail system, and I'm
> using relay_recipients_map to block unknown recipients at the gateway
> (instead of allowing the messages through to the internal system and
> then generating a non-delivery report). This is working just fine, but
> I'm interested in changing the text that Postfix returns when an
> invalid/unknown recipient is submitted. I'm almost positive I saw
> reference to a Postfix parameter for this, but can't find it now. Does
> anyone know the name of the parameter that would allow me to change this
> text?
>
> TIA
>