On 2 May 2001 23:56:42 +0200, Ben Rosengart <brpanix.com> wrote:
> Am I correct in guessing that giving this argument to smtpd_*_restrictions
> causes clients with no reverse DNS entries to be unable to send mail?

Yes.

> What if they have reverse DNS but it doesn't agree with the A record,
> what happens then?

Then a warning is issued.

> I'd like to have a setup where my servers could reject mail with
> a 5xx code if the name server is reachable and doesn't have a record
> for the SMTP client, and a 4xx code if the name server isn't
> reachable or responding. Is there any way to do this with Postfix?

Use
unknown_client_reject_code = 554
for that. If Postfix encounters a transient error while resolving the IP or
hostname, a temporary error code is returned.

-- 
ralf.hildebrandtinnominate.com                            innominate AG
System Engineer                        Don't be afraid of what you see -
Diplom-Informatiker                     be afraid of what you don't see!
tel: +49.(0)7000.POSTFIX  fax: +49.(0)30.308806-698         
-
To unsubscribe, send mail to majordomopostfix.org with content
(not subject): unsubscribe postfix-users

• Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]