Am 26.06.2019 um 14:52 schrieb Tobias Matthaeus via mailop:
Unfortunately, some mail users on the mail server I am maintaining
have a problem with Freenet. Does one of you have such a problem or
even better: Is there a Freenet postmaster who can take care of it?
The following scenario:
A Freenet user writes an e-mail from bspw us...@freenet.de
<mailto:us...@freenet.de>to us...@externedomain.de
<mailto:us...@externedomain.de>
The e-mail address us...@externedomain.de
<mailto:us...@externedomain.de>is again hosted on my mail server and
is provided with redirections. One of the redirects is for example
us...@freenet.de <mailto:us...@freenet.de>
The e-mail from us...@freenet.de <mailto:us...@freenet.de>to
us...@externedomain.de <mailto:us...@externedomain.de>is now bounced
on delivery to us...@freenet.de <mailto:us...@freenet.de>with the note:
relay=emig.freenet.de <http://emig.freenet.de>[195.4.92.216]:25,
delay=1.3, delays=0.94/0.19/0.16/0.03, dsn=5.0.0, status=bounced (host
emig.freenet.de <http://emig.freenet.de>[195.4.92.216] said: 587
Please use submission (587) for local to local mail. (in reply to MAIL
FROM command))
You are not explicitly saying if the forwarded mail still has an
envelope sender of us...@freenet.de, but I will assume that.
I've been preaching for quite a few years that same envelope sender
forwarding is no longer a good idea for totally different reasons.
The main use of the envelope sender is for bounces and a few other
notifications.
The majority of today's mail users have only a very shady idea of the
workings of internet mail. If they get a bounce for a mail from an
address they never sent something to, they will not understand it. Even
if there is some info about the original message in the bounce mail,
which some recipients wont even send (except for the recipient's
address), chances are the bounce will be "helpfully" mistreated by the
senders mail system.
And, still worse, the original sender can do *nothing* about it.
SRS doesn't help here at all, BTW.
If a user-directed forward doesn't work, the person responsible for the
forwarding should be informed, not the original sender.
So, please, reset the envelope sender to something like
real-u...@externedomain.de, or whatever your mail system may use to
prohibit forwarding. Otherwise you have set up a loop.
There are problems with this approach, of course. If the recipient
doesn't read his original address, ever, things won't get noticed.
Jost
_______________________________________________
mailop mailing list
mailop@mailop.org
https://chilli.nosignal.org/cgi-bin/mailman/listinfo/mailop
