Recieving error: 550 This is a submission only port. You must authenticate before sending mail
Problem reported by Nikhil Katara - January 22 at 12:55 AM
Submitted
Hello Team,

This is to inform you that we are experiencing the below issue while receiving the emails from third party domain users.

Error: smtp; 550 This is a submission only port. You must authenticate before sending mail

For complete error message we are attaching the file.

Can you help me to understand why i am getting this error while receiving the email from the domains. Also where can i check these settings in SMARTERMAIL

We are using  :SmarterMail Professional Edition - Version: 16.3.6897

Regards.
Anil P

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