Authenticated transports

[cuttys]

Hello!

Is there way to use authenticated transport for relaying emails to internal email server?
It's ms exchange, so anonymous connections have 250 2.1.5 Recipient OK on "rcpt to" command for unknown recipient and have 550 5.1.10 only after end of "data"

 

[Stoiko Ivanov]

I think it's possible to configure exchange to answer with 550 after rcpt to ...

authentication for transports is not directly possible in PMG (as it's meant to be run as a proxy between the internet and your e-mail server, where authentication is not used)

as a last resort you could maybe adapt the postfix configuration to use smtp-auth using the templateing system:
https://pmg.proxmox.com/pmg-docs/pmg-admin-guide.html#pmgconfig_template_engine

I hope this helps!