Developers of Sympa

[address@concealed]

Patrick von der Hagen wrote:.

> I'm still running listserv, which is a terrible source of such
> misdirected bounces. Using Sympa (I expect so move from "testing" to
> "production" soon) would already reduce the number of misdirected
> bounces, due to the fine-grained scenarii.
>  
Right

> However, I'd like to have an even better solution and reject e-mails
> during the smtp-transaction, whenever possible.
>  
I agree

> After finally having a look at the documentation of Sendmail::Milter and
> the sourcecode of sympa, this seems to be quite easy.
>
> I just need to register one callback with Sendmail::Milter which is to
> be invoiced after the message has been received. That callback would
> save the message to disk and perform quite literally what DoFile and
> DoMessage perform right now, but instead of actually processing the
> message it should just return what action is to be processed.
>  
We agree on the goal to reduce bounces and prefer SMTP code error during 
the session. However we don't think that Sympa have to deal with this. 
Some milter allready exist in order to test if some receipient exists or 
not. j-chkmail, milter-ahead at least provide this service. The only 
configuration where this could prevent a bounce should be if the mail is 
adressed to an existing list hidden to the message sender via a 
visibility scenario. It introduce too much complexity in Sympa for this 
objective. If you provide a contrib we do not garanty that we will 
introduce it into Sympa "official" version because  code managment is an 
important issue.

Serge