Sometimes when you are experiencing an issue with email, accessing the email headers will provide some helpful to find the root cause of the issue. If you have a ticket open with the Support Dept. on the email, you might be asked to provide email headers. Depending on how you normally access your emails, steps to view the email headers will be different for each email client/interface.
For information on understanding the contents of email headers, please visit this link. To view your email headers in Mac Mail, please see the following steps:
1. Click on an email for which you'd like to view the header information
2. Click 'View' in the top menu
3. Click 'Message' and then 'All headers'
4. You can copy/paste this information into the Support ticket you have open
If you require any further information/assistance here, please feel free to Open a Ticket with our Support Dept. and the team will be happy to help further.