[Mailman-Users] Bounces not being detected

[Mark Sapiro]

On 06/21/2014 11:00 AM, Peter Fraser wrote:
> I checked the data directory and saw some *.pck files Their names were along the lines of "heldmsg-<list_name>-727.pck"so I guess then bouncerunner should be running. All the .pck files have heldmsg in the name.


These are all messages held waiting moderator action.


> The way our setup is designed though, the mailman box isn't the mail smtp relay.


What Postfix logged the message you reported earlier?


> It sits behind the firewall and just sends out. So I'm thinking that if a downstream box later bounced the messages, that wouldn't hit the mailman box, but would hit the main smtp relay and back to the exchange server box. I looked then at the logs of the main smtp relay and did see some bounces with dsn id's
> I'm hoping though that the bounces detected during the smtp transaction should be detected by postfix and then mailman.Maybe that accounts for those few .pck files? Not sure.


Downstream bounces should always be reported via DSN sent back to the
envelope sender of the original message which is
LISTNAME-bounces at list.domain or in the VERP case,
LISTNAME-bounces+bouncing_user=users.domain at list.domain. These should
get back to Mailman.

In general, some SMTP server gets a 5xx status from the next hop. That
server sends a failure DSN back to the envelope sender. That DSN should
get back to Mailman and be processed.

-- 
Mark Sapiro <mark at msapiro.net>        The highway is for gamblers,
San Francisco Bay Area, California    better use your sense - B. Dylan