internal senders can send mail to user with new mailbox
Hey Experts,
I am beginning a migration to O365 from exchange 2010 and was checking the health of mailboxes prior to deploying the hybrid configuration.
I discovered a user's mailbox that had corruption and to cut he story short, I had to delete the mailbox and re-create it (leaving the AD user account intact)
All went well but now I have discovered that internal users get an NDR stating that the user cannot be found.
I have tried:
- to force an update on the OAB then forced outlook on another user's machine to download the OAB,
- removed the entry from the other users NK2 files,
It work fine when I use OWA to send mail to the new mailbox which leads to believe that there's a problem with distribution of the OAB.
Anyone assist me with this?
Thanks
I am beginning a migration to O365 from exchange 2010 and was checking the health of mailboxes prior to deploying the hybrid configuration.
I discovered a user's mailbox that had corruption and to cut he story short, I had to delete the mailbox and re-create it (leaving the AD user account intact)
All went well but now I have discovered that internal users get an NDR stating that the user cannot be found.
I have tried:
- to force an update on the OAB then forced outlook on another user's machine to download the OAB,
- removed the entry from the other users NK2 files,
It work fine when I use OWA to send mail to the new mailbox which leads to believe that there's a problem with distribution of the OAB.
Anyone assist me with this?
Thanks
ASKER CERTIFIED SOLUTION
membership
Create a free account to see this answer
Signing up is free and takes 30 seconds. No credit card required.
ASKER
Perfect. I followed your advice and problem sorted. But I'm curious to know, Should exchange not have updated the GAL with the new mailbox details or is that something stored in AD?
-->Should exchange not have updated the GAL with the new mailbox details or is that something stored in AD?
Exchange will do by itself.
Exchange will do by itself.
You have another question after you received your answer and solution but here I go.
The issue is not with exchange itself. The issue is the client (outlook). The client still have the old recipient id when the user select the name of the recipient from his/her cached drop down list or replies to an old email. It is kind of a simple change but to make the users understand it and actually make the change in their habits is quite different. Therefore, you doing the change in the user mailbox addresses is quite faster specially if this particular user receive emails from a vast majority of co-workers in the organization.
The issue is not with exchange itself. The issue is the client (outlook). The client still have the old recipient id when the user select the name of the recipient from his/her cached drop down list or replies to an old email. It is kind of a simple change but to make the users understand it and actually make the change in their habits is quite different. Therefore, you doing the change in the user mailbox addresses is quite faster specially if this particular user receive emails from a vast majority of co-workers in the organization.
ASKER
550 5.1.1 RESOLVER.ADR.ExRecipNotFou
thanks