it is the require all users are authenticated, either way it looks to be an issue on the teacher's school end and not on your network.
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Exchange 2007: 550 5.7.1 RESOLVER.RST.NotAuthorized
Hi,
Any ideas on this one?
One of our students is emailing a teacher at another schoool and gets the following bounce back:
Your message wasn't delivered because of security policies. Microsoft Exchange will not try to redeliver this message for you. Please provide the following diagnostic text to your system administrator.
#550 5.7.1 RESOLVER.RST.NotAuthorized
Googling it, doesn't give me a whole lot to work on.
Any pointers would be most appreciated.
We relay our e-mail through our ISP, could this have something to do with it?
I just sent the same user a test email and I didn't receive a bounceback but the delivery report said:
Subject Relayed: Test 2 - please ignore:
Body: Delivery to these recipients or distribution lists is complete, but delivery notification was not sent by the destination:
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by: badgermikePosted on 2009-09-29 at 06:57:37ID: 25449044
I would check that user via exchange and see if there is any message restrictions
go into emc - go to the mailbox - right click - go to properties - go to mail flow settings - message delivery restrictions and see if the authenticate box is checked
wait since it is the teacher mailbox that is rejecting the message , the other school should check the teachers settings.