we have a postfix server that uses SASL and we are trying to relay the box through an eexchange 2010 server but it keeps spitting back errors
(delivery temporarily suspended: SASL authentication failed: server mail.mail.com[184.108.40.206] offered no compatible authentication mechanisms for this type of connection security)
This was using an account on the server to authenticate and it still failed...
(delivery temporarily suspended: host mail2.mail.com[220.127.116.11] refused to talk to me: 421 4.3.2 Service not available)
server mail2.mail.com is set as a relay with Ip restrictions, the IP's are in the allow list but this error still pops up
I had issues setting up this receive connector in this thread
attached are images for what i ended up having and doing.
Any thoughts on this and what i may need to still set?