Multiple Smarthosts based on sender E-Mail address

[thomas-hn]

Hi,

is it possible to have multiple smarthosts (outgoing SMTP servers), based on the E-Mail address of the sender?
For example:
Mails from the address foo@myinternalmaildomain.com shall be forwarded to a SMTP server of GMX mail.
Mails from the address bar@myinternalmaildomain.com shall be forwarded to a SMTP server of Yahoo mail.

Thanks in advance,

Thomas

 

[Stoiko Ivanov]

Currently not out of the box (we are considering adding such functionality though) - but you can try to adapt the postfix config to your needs:
see:
https://www.postfix.org/postconf.5.html#sender_dependent_relayhost_maps

(to adapt the postfix config in pmg you need to use the templateing system:
https://pmg.proxmox.com/pmg-docs/pmg-admin-guide.html#pmgconfig_template_engine)

I have not tried this myself - so would be grateful for a report on how this worked

 

[baradhili]

I've tried it - not quite per email - its painful - but mostly due to the templating system (I think) - but that is probably me not quite working out how everything runs properly

setting main.cf.in in /etc/pmg/templates to smtp_sender_dependent_authentication = yes , running pmgconfig sync --restart 1, and systemctl restart postfix

and yet I get
postconf -df | grep smtp_sender_dependent_authentication
smtp_sender_dependent_authentication = no

Its doing my head

 

[Stoiko Ivanov]

and yet I get
postconf -df | grep smtp_sender_dependent_authentication
smtp_sender_dependent_authentication = no

from the postconf manpage:

-d Print main.cf default parameter settings instead of actual settings.

so check with `postconf |grep smtp_sender_dependent_authentication`


However I'm not sure this is the only key you need to add (you proabably also need the sender_dependent_relay_host_maps as I linked above)

 

[baradhili]

ahh those little gotchas.. thanks

 

[carsten2]

ahh those little gotchas.. thanks

Can you publish your solution here, because I also need sender dependent relay hosts (unfortunately the pmg team does not include it in the GUI).