When I run mail flow troubleshooter analysis, I get the following error below. I am hoping someone in this forum can point me in the right direction to troubleshoot as I have already look into sent/receive connector.
1- Error submitting mail
Mail submission failed: Error message: Server does not support secure connections.
2- Error submitting mail
Mail submission failed: Error message: The SMTP host was not specified
3- Error submitting mail
Mail submission failed: Error message: Server does not support secure connections.
Sincerely