Why do i have this message : 550 5.7.1 RESOLVER.RST.AuthRequired; authentication required When the transport rule is to transfert email to an universal distribution group ? my goal is to make a rule to do support@xxx.fr transfert to internalsupport@xxx.fr (internalsupport is an universal distribution group) Thanks for your soon answer. Best regards.

I have found the solution There is a something to uncheck in the distribution group / restriction check user authentification

Jos, I've got the same problem over here. Can you remember what you uncheck? I've been searching for over a day now. --edit-- Ok I've solved it; On the distibution group goto the tab Mail-flow, open message delivery restictions and remove Require authentication. So thank you for the lead. Marcel van der Steen

Steps as below: #1. Click the Distribution Group name as you want to set #2. Click the "Properties" #3. Click the "Mail Flow Settings" Tab #4. Click the "Message Delivery Restrictions" item #5. Click the "Properties..." button #6. Uncheck the "Require that all senders are authenticated" item #7. Click "OK" button #8. Click "OK" button again

Same error, but this process did not resolve the issue. Any other suggestions?

This process worked for me. Thanks very much!

Hai Thanks Boss , ........................ Great Job

Worked Perfectly.

This worked - thanks for saving my time.So the question is "Why is this set as default by Microsoft?"I've had issues whereby I needed to delete the recive connector and recreate it for it to work so try this if you are still having the issue.

Worked Perfectly for me too!!!

That's just sweet!! Thank you

Problem solved! Thank you!

I have tried this option ....great it is really worked for me...good solution.

Worked Perfectly for me too!!! tks

Thankx Budy

Work for me! Tks!Israel

Thank you for your help!

Thanks !!!! in Exchange 2010 its work too

only a simple "Uncheck" action... Thanks Marcel for short and Frank.TWN for complete description of the solution.SCCM 2007 R2 with MDT 2008 Exchange 2010 SP1 W2K8 R2