I have been searching for the answer if anyone can help. I am using split delivery concept where primary is Google workspace and secondary is mailcow for a Single domain. everything is working fine in email communication.
However issue comes when there is no email account present on Google as well as on Mailcow. Email goes into loop between google and mailcow and after approx 10 to 15 loops sender gets notification as Too many hops.
One of the user on telegram channel suggested:
you need fix your relay config, you at one place need to NOT blindly relay mail
But as being newbie.. i do not know what to configure on mailcow side as Google does not have anything at relay side.
If anyone can point out in stopping the loop will be helpful.