exchange-server-2010

Exchange 550 5.7.1 RESOLVER.RST.AuthRequired; authentication required


If you are trying to send email from your web server to a distribution group email and it isn’t going through, and the Exchange log shows the following error “550 5.7.1 RESOLVER.RST.AuthRequired; authentication required” then follow the steps below to fix it.

550-exchange-error

Exchange 550 Error

Step 1

Click on the the Distribution Group name that you are having trouble with via the Exchange Management Console and go to properties.

Step 2

Click on the “Mail Flow Settings” Tab.

Step 3

Click the “Message Delivery Restrictions” item.

Step 4

Click the “Properties…” button.

Step 5

Uncheck the “Require that all senders are authenticated” item.

Step 6

Click “OK” button.

Step 7

Click “OK” button again.

require-senders-authenticated

Now try sending again, watch your logs in Exchange via the Toolbox Message tracking tool and hopefully you will now have success and no error.


You may also like:

Migrate email to Office 365 using WHM If you are like me, then you are simply wanting to migrate your email over to Microsoft Office 365 to take advantage of Exchange. Me and my colleague ...
Add An Out Of Office Message In Outlook for A Diff... Did an employee just leave for vacation and forget to do something? Below the instructions will show you how to add an out of office message in Outloo...
Grant Full Access to All Mailboxes in Exchange 200... This is a short tutorial on how to add full access to all mailboxes in Exchange 2007 and 2010 for a an additional user. This can come in handy when sa...
Windows Server 2012 Mailbox Role Process Execution... If you are trying to install Exchange 2010 on Windows Server 2012 and are receiving the error "Mailbox Role Process Failed.... Process execution faile...
How to Fix Exchange Server Error 00002098 This article will help you to solve the problem with the creation of a mailbox. It occurs when you are trying to create a mailbox for an existing user...
READ ALSO  Deploy MS Office 2016 Using MDT 2013
  • Mohannad Khaled Maglad

    dear , can i get solution with out uncheck box for authentication ,