How to Fix the 550 5.1.1 error

The most common type of “550 5.5.1” error messages are: 550 5.1.1 : The email account that you tried to reach does not exist 550 5.1.1 : Recipient rejected 550 5.1.1 : User unknown 550 5.1.1 : Recipient address rejected: User unknown in virtual alias table Major causes of “550 5.5.1” error messages are: Wrong … Read more

How to Fix the Error “The Microsoft Exchange Administrator has made a change that requires you quit and restart Outlook.”

Mostly user faces this error after the mailbox migration from Exchange 2010 to 2013 or 2016. However, there are several reasons that your users may experience the following error in Microsoft Outlook: “The Microsoft Exchange Administrator has made a change that requires you quit and restart Outlook”. In this TechNet blog you will see the … Read more