Of course I will focus on what you explained me earlier.
I just wanted to get a detailed understanding og what it is doing already.
Thanks for help!

On Tue, 12 Mar 2019, 22:47 Mark Sapiro, <m...@msapiro.net> wrote:

> On 3/12/19 4:17 AM, Aaryan Bhagat wrote:
> > In "bounce.py"  in "mailman/src/mailman/runners"
> >
> > There is a comment in line 75 of this file states---------
> > The addresses will come back from flufl.bounce as bytes/8-bit strings,
> but we must store them as unicodes in the database.  Assume utf-8 encoding,
> but be cautious.
> >
> > Reply by Mark Sapiro
> >> 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.
> >
> >
> > Since there are two types of bounces. What is the return format of the
> first type ( failures  in SMTP )?
> > Do we need some encoding to their response also?
>
>
> You are focusing on the wrong thing. All the existing code is doing the
> right thing. It is the part that isn't implemented you that you need to
> be concerned with. I.e., once a bounce event is recorded, what do we do
> next.
>
> --
> 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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