On 3/11/19 8:32 PM, aaryan bhagat wrote:
> Is this in the mailman3 doc?

There is some doc at
<https://mailman.readthedocs.io/en/latest/src/mailman/model/docs/bounce.html>.


> Like for what failure should we retry or discard the mail etc.


There are two kinds of bounces. There are failures in SMTP delivery from
Mailman to the MTA. These are all handled by the outgoing runner. 5xx
permanent failures are registered as bounces and 4xx temporary failures
are retried.

The other kind are DSNs of some type returned to a LIST-bounces address.
These are processed by flufl.bounce
<https://gitlab.com/warsaw/flufl.bounce/> which determines whether the
failure is temporary or permanent and reports that to the bounce runner.

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