Wietse Venema:
> Daniel Ry?link:
> > Hello
> >
> > What are the valid values for this configuration option?
> >
> > I tried to set it as "PERMIT", and the server failed to stard saying
> > it's "Bad configuration".
>
> RTFM?
> http://www.postfix.org/postconf.5.html#unverified_recipient_reject_code
> http://www.postfix.org/postconf.5.html#reject_unverified_recipient
Ah, this was ..tempfail_action. Documentation sats:
unverified_recipient_tempfail_action (default: $reject_tempfail_action)
The Postfix SMTP server's action when reject_unverified_recipient fails
due to a temporary error condition. Specify "defer" to defer the remote
SMTP client request immediately. With the default "defer_if_permit"
action, the Postfix SMTP server continues to look for opportunities to
reject mail, and defers the client request only if it would otherwise
be accepted.
And those two, defer and defer_if_permit, are the permitted actions.
> > My aim is to set the server so that it defers mail for recipients
> > that fail permanently during the recipient address verification
> > (for example, the target mailserver answers that the user does not
> > exist. I don't want to accept mail for a non-existent user). On
> > the other hand, I want to accept mail for recipients that fail
> > temporarily (for example, greylisting or full mailbox), because
> > some of me users use this servers as smarthost and I want the
> > server to try several times on their behalf instead of rejecting
> > the mail immediately.
>
> Use reject_unverified_recipient only for addresses in domains that
> you control, not everything out there on the internets.
>
> smtpd_recipient_restrictions =
> ...stuff...
> reject_unauth_destination
> ..stuff...
> reject_unverified_recipeint
> ..stuff...
>
> Wietse
>
