Email Security Gateway cannot reach destination hosts
Getting a notification from the email appliance: Although destination servers are responding to
the SMTP test, the Email Security Gateway is failing to
connect to them: Service unavailable, downstream is
rejecting SMTP connections 202208292121120010733;1
I'm also getting a error on the email server: domain\user provided valid credentials but it does not have submit permissions on smtp receive connector.
I just received that notification today from the email security appliance however the error on the email server appears to have been going on for some time. Perhaps these two events aren't related. Can anyone confirm they likely are or are not based on the information I provided? I'm a bit confused myself as everything appears to be working otherwise. Emails are coming in and going out it seems just fine.