On 11/12/2010 12:40 PM, Mingliang Zu wrote:
Hi,
I'm using postfix 2.3. My intention is to reject "MAIL FROM" command
(give a 501 syntax error) if the sender doesn't contains '@'.
Add reject_non_fqdn_sender to your restriction list.
"Reject a sender" is not the same as a syntax error; however, you can
set the status returned by a match on a non-fqdn address or hostname:
non_fqdn_reject_code = 501
But think why you would want to change it from the default first.
I have worked on it for two days but without any luck.
The following lines are added to main.cf <http://main.cf>. I was
expecting "strict_rfc821_envelope" to do the trick, but unfortunately,
it doesn't.
No, strict_rfc821_envelopes only deals with INVALID address formats, not
non-fqdn ones.
As long as the MTA can figure out what the sending domain is, a
localpart-only address is not invalid, merely incomplete.
smtpd_sender_restrictions =
permit_mynetworks,
reject_non_fqdn_sender,
reject_unknown_sender_domain,
permit
This does not prevent clients in mynetworks from using malformed senders.
--
J.
