> -----Original Message-----
> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
> Behalf Of Jason R. Mastaler
> Sent: Thursday, January 15, 2004 10:42 PM
> To: [EMAIL PROTECTED]
> Subject: Re: One more question - bounce processing...
>
>
> "Mitch (WebCob)" <[EMAIL PROTECTED]> writes:
>
> > So do the dated thing though I'd have to have a lot more complicated
> > config than I do now (I'm an ISP, with remote users... have to start
> > simple and well documented and expand as possible...)
> >
> > For that I'd need to configure the smtp proxy, and accept mail there
> > (and retag it) for all those outlook users - right? My webmail uses
> > esmtp, so that would work the same...
>
> You can configure tmda-ofmipd a number of ways.  You can run it on a
> separate port such as 8025 and have users point their mail clients
> there.  Or, you can use regular old port 25 if the machine does not
> receive incoming mail.

Right - yes there is always the incoming mail to consider ;-) in my zeal I'd
forgotten about that, so yes - another port it is. Could run it on the msa
port.

> > But to allow SOME users to use this and not others, I'd have to use
> > a separate port, and include that in some sort of advanced setup
> > directions (or could this process be configured to just pass the
> > message through if an environtment var / flag indicated the user did
> > not want preprocessing...
>
> tmda-ofmipd does not currently have a "passthrough" method for users
> without a TMDA setup, but it's on the TODO list.

Considering all my users receive mail on their own IP's, that won't save
me - but that's ok - with a few pretty pictures we can document as needed.

> However, if the user has a minimal TMDA setup (I think only
> ~/.tmda/crypt_key is needed for tmda-ofmipd), and his ACTION_OUTGOING
> is set to 'bare', that's effectively the same thing.  tmda-ofmipd will
> process the mail, but won't change the addresses in the message.
>
> See http://mla.libertine.org/tmda-users/2003-11/msg00383.html
>
> Also, see TMDA FAQ 7.6.  It is Exim specific, but might give you some
> ideas for your own SMTP server.

I think that does help... at least in concept... I can run a localmailfilter
on courier - I think... which should allow me to xfilter my message through
an external program - I write on stdin and read a modified message on
stdout... can I do this rewrite directly witha tmda program or do I have to
wrap it somehow?

> > Setting BOUNCE_ENV_SENDER could be done globally based on the domain
> > of the sending user - or does this have to be done in the smtp
> > proxy?
>
> BOUNCE_ENV_SENDER is only used for challenge messages sent by TMDA in
> response to incoming mail.  See
> http://tmda.net/config-vars.html#BOUNCE_ENV_SENDER
>
> > Does tmda-ofmipd proxy the authentication when it sends to the local
> > smtp server? We don't allow ANY unauthenticated smtp
>
> No, because that would be double authentication, which seems
> unnecessary.  If the user has successfully authenticated with
> tmda-ofmipd, shouldn't that be enough?
>
> By default, tmda-ofmipd will invoke the /usr/sbin/sendmail command on
> the local system to inject the message which doesn't do any
> authentication.
>
> That said, there is a way to do the double authentication if you
> really need it.

Maybe I do - maybe I don't. If tmda-ofmipd will suid to the authenticated
users id, then i'd be fine - doubt you guys are doing that though... there
wouldn't normally be a reason on my servers, only real user accounts can run
sendmail - if I pass through proxy that removes that known user concept then
I can't track message source back to a user / client and nail someone who
violates the aup.

Everything except cron jobs are typically submitted through authenticated
smtp - even when on localhost.

Is this easy to add / config?

>
> > One other question about this - I bet I know the answer cause you
> > HATE programs that lose mail... the ofmipd doesn't return ok until
> > the local smtp does - right? ;-)
>
> Right.

Loving it.

Wonder why I didn't find this software years ago. Hope it becomes a lot more
popular.

m/

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