Hello,

We have an issue with receiving emails from a non-existent user on the server.

I'll explain our topology we have a billing server that use Proxmox Mail Gateway to send emails, it sends emails under name no-reply@example.com and this works fine until we send emails to iRedMail server. iRedMail server serves domain example.com The issue appear when some emails are sent to staff with emails from example.com which are served by iRedMail server. These notification are not received. We did some research and found that when PMG is connecting to iRedMail server, it is refused in connection with statement that on iRedMail is no user with name no-reply@example.com. So the question is, how to specify in config to ignore receiving email from this non-existent user.

Best Regards,
Alopex.