When we try to send mail to a specific external address (EARTHLINK.NET), failure delivery report returned as below:
"SMTP Protocol Returned a Permanent Error 550 Authentication required."
We are using Domino 7.02 and Outlook as Pop3 client.
Any idea on this case? Thanks.
This article will help to fix the below errors for MS Exchange Server 2016
I. Certificate error "name on the security certificate is invalid or does not match the name of the site"
II. Out of Office not working
III. Make Internal URLs and Externa…
In this video we show how to create an email address policy in Exchange 2013. We show this process by using the Exchange Admin Center.
Log into Exchange Admin Center.: First we need to log into the Exchange Admin Center.
Navigate to the Mail Flow…