Email Diagnostics are showing errors in red but Email server is fully functional 

Problem

When clicking on the Email Diagnostics link, errors are showing in red but there are no issues reported with the Email server or Emails not being sent or received.

Symptoms

1. Click on the link Email Diagnostics as shown in the screen print below

https://[instance name].service-now.com/email_diagnostics.do

2. The following window is shown with errors:
   
   
     

Cause

This happens because this is a client script that will show up red warnings only based on a timeout value. This diagnostic script is not a real time connection attempt to the Email server.

Therefore, those errors do not represent a real issue but should only be regarded as a warning for a potential issue

Resolution

Not applicable as this is expected behavior