Re: Undelivered Mail Returned to Sender

Am 15. Juli 2020 um 11:58 Uhr schrieb "John W. Eaton":
> On 7/11/20 4:28 AM, Markus Mützel wrote:
> 
> > @jwe: Are you managing the dreamhost account?
> 
> Yes.
> 
> > Do you think they could help setting up the email forward of [email protected] to [email protected] correctly?
> > At the moment gnu.org rejects some of the messages because the sending domain and the IP of the dreamhost server mismatch (see above).
> 
> I'm not sure what to ask them to do.
> 
> I have many forwards for each list on the server (not sure that all are 
> needed, but I added them to be complete since all of these are used by 
> mailmain):
> 
>    [email protected]  [email protected] 	
>    [email protected]  [email protected]
>    [email protected]  [email protected]
>    [email protected]  [email protected]
>    [email protected]  [email protected]
>    [email protected]  [email protected]
>    [email protected]  [email protected]
>    [email protected]  [email protected]
>    [email protected] 
> [email protected]
>    [email protected] 
> [email protected]

To be honest, I thought that the mail server on octave.org was managed by dreamhost. But from what you've written, I gather that you manage mailman on that server yourself?

I'm not sure if this will work. But maybe the following will setup SRS on that server (stolen from https://www.howtoforge.com/community/threads/postfix-sender-rewriting-scheme.66290/ ):
# apt-get install postsrsd
# sed -i "s/^SRS_DOMAIN=.*/SRS_DOMAIN=`hostname -f`/" /etc/default/postsrsd
# service postsrsd stop
# service postsrsd start
# postconf -e "sender_canonical_maps = tcp:localhost:10001"
# postconf -e "sender_canonical_classes = envelope_sender"
# postconf -e "recipient_canonical_maps = tcp:localhost:10002"
# postconf -e "recipient_canonical_classes= envelope_recipient,header_recipient"
# postfix reload

If that isn't possible, maybe we could also ask gnu.org to whitelist the IP of the mailserver on octave.org.

> 
> If you want to avoid the forwarding problems, then maybe the best 
> solution is to just use the @gnu.org addresses directly?

You are right, I could just use the @gnu.org addresses instead (and I usually do now). But it's easy to forget to check which mail address will be used when clicking on "Reply all".

Markus