Remote server returned '550 5.7.367 Remote server returned not permitted to relay -> 554 5.7.1 <mike@domain.com>: Relay access denied'

[mikekay1]

Thank YOU SO MUCH, this is exactly what I need and have been slowly deploying this over a few days.

I double checked all my LDAP settings, is there documentation on what needs to change on the exchange side for everything to work. I have outbound email but no inbound. I tried to catch you on discord but you haven't been active there in a while. Really hoping you can help me out personal server, fail M$ pushing its own products like EOP and O365 business because a 40k license for Exchange 2019 isn't enough, so we need to shield the pig of a server with post fix. honestly sometimes wish my files weren't locked into exchange. I digress though -- what can I provide you with to help sort the error?

[mikenye]

Which server is denying the relay access? Postfix or Exchange?