The test Email fails due to the from address not being set correctly. It tries to send it from 'MAILER-DAEMON@domain.com' rather than the correct user. The correct user likely needs to be set as a different config value in order to be set correctly. This doesn't prevent external applications from sending mail through the relay and only impacts the test message.
status=bounced (host smtp.office365.com[52.96.18.2] said: 554 5.2.252 SendAsDenied; xxxx@live.com not allowed to send as MAILER-DAEMON@live.com;
The test Email fails due to the from address not being set correctly. It tries to send it from 'MAILER-DAEMON@domain.com' rather than the correct user. The correct user likely needs to be set as a different config value in order to be set correctly. This doesn't prevent external applications from sending mail through the relay and only impacts the test message.
status=bounced (host smtp.office365.com[52.96.18.2] said: 554 5.2.252 SendAsDenied; xxxx@live.com not allowed to send as MAILER-DAEMON@live.com;