Hello,
I'm learning how to get remote address verification working. My 'mail1' server
receives mail from the net, and checks on 'mail2' to see if the recipient is
valid.
I've got a question about error/dsn status for the rejections.
Right now I've got non-existent addresses being rejected, like I'd expect.
So far, in my 'mail1' main.cf I have
address_verify_map = lmdb:/var/lib/postfix/verify_cache
address_verify_transport_maps =
static:addressverify:[mail2.example.com]:25
relay_recipient_maps =
reject_tempfail_action = defer_if_permit
unverified_recipient_tempfail_action = defer_if_permit
When I send to a non-existent address at my domain, I see this in the 'mail2'
server's logs
Mar 23 09:01:01 mail2 postfix/qmgr[29724]: 01BA8102D48:
from=<j......@gmail.com>, size=4788, nrcpt=1 (queue active)
Mar 23 09:01:01 mail2 postfix/error[32481]: 01BA8102D48:
to=<noex...@example.com>, relay=none, delay=0.24, delays=0.15/0.03/0/0.06,
dsn=5.0.0, status=bounced (example.com)
Mar 23 09:01:01 mail2 postfix/cleanup[30437]: 3F01C102E80:
message-id=<20160323160101.3f01c102...@mail2.example.com>
Mar 23 09:01:01 mail2 postfix/bounce[32482]: 01BA8102D48: sender
non-delivery notification: 3F01C102E80
Mar 23 09:01:01 mail2 postfix/qmgr[29724]: 3F01C102E80: from=<>,
size=6713, nrcpt=1 (queue active)
Mar 23 09:01:01 mail2 postfix/qmgr[29724]: 01BA8102D48: removed
and I receive this at the original sending account
Reporting-MTA: dns; mail2.example.com
X-Postfix-Queue-ID: 01BA8102D48
X-Postfix-Sender: rfc822; j......@gmail.com
Arrival-Date: Wed, 23 Mar 2016 09:01:00 -0700 (PDT)
Final-Recipient: rfc822; noex...@example.com
Original-Recipient: rfc822;noex...@example.com
Action: failed
Status: 5.0.0
Diagnostic-Code: X-Postfix; example.com
I get "Status: 5.0.0" and "Action: failed".
So it seems the rejection is working.
But, is '5.0.0' the right response here from the remote address verification
check? Is is possible to have a more-informative 'this email doesn't exist'
message/status? Or should I?
Thanks for helping clear this up.
