The outbound smart host connector from 365 to Proxmox is failing with a Relay access denied error.
All of Microsoft's IP ranges have been added as trusted networks in the following configuration location:
Configuration > Mail Proxy > Networks
Here are their ranges...
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.