Error: MigrationRecipientNotFoundException: A recipient wasn‎'t found for *** on the target.

Question

I have successfully run a migration on one large gmail mailbox, and this is running a daily sync just fine, dumping any new mail in to my new O365 mailbox once a day - it as very slow to complete the sync but it worked a treat.

We have some other mailboxes on another shared GSuite account that I want to migrate across - so I used the same endpoint (after all its still Gmail) - and added the new migration details - to sync mail in to the same O365 mailbox as the one above.  After a few minutes I get :

Error: MigrationRecipientNotFoundException: A recipient wasn‎'t found for "****" on the target. Create a recipient of the appropriate type for this migration on the target and try again.

I don't have the same mailbox on O365 as I am not planning on migrating the domain at all - just want the emails sync'd yo my O365 email account - which worked fine for the other one, which I also don;t have on this new O365 account.

I am stumped - all settings on the Gsuite that worked are the same on the second Gsuite...... flummoxed!

Answer 1

Hello Adam,

Please feel free to contact me if you have any concerns regarding this issue.

Best Regards,

Anna

Answer 2

Hello Adam,

Thanks for your information. In logs I found that you created two batches to migrate data.  From my test result, it is not feasible to set two batches and then sync two different Gsuite accounts to the same Office 365 account.

And It is not feasible as well if using one batch and sync two different G suite account to same Office 365 account, as in this way one Office 365 account in csv file are listed more than once, Exchange will also prompts UserDuplicateInCSVException.

Since from your description, you main requirement of wanting to sync two G suite account to same Office 365 account, I suggest you may delete the first batch after all data is migrated completely, then re-create the second batch to sync and migrate data. If there’s any concerns, please feel free to let me know.

Best Regards,

Anna

Answer 3

Hello Adam,

From your description, you created two batches (from Exchange admin center->recipients->migration->New) with same endpoint, one batch sync a Gmail mailbox to your Office 365 account and its status shows synced and not stopped. Error occurs when you trying to create another batch and sync a different G-suite mailbox to the same Office 365 account. By my test, it is not feasible as Exchange will prompt UserDuplicatedInOtherBatchException. If anything misunderstood, please correct me.

According to the error “MigrationRecipientNotFoundException: A recipient wasn‎'t found for "****" on the target”, does the error occur if you migrate G suite account to a different Office 365 account for test in same tenant? May I collect full error report and other information from you in Private Messages for checking?

Best Regards,

Anna

Answer 4

Hi Oliver,

Yep I am using IMAP.  The weird thing is that I have successfully sync'd another Gsuite mailbox from another Gsuite account already (that was completed last month).  So all I did was use the same endpoint (as it is basically the Google IMAP connection for all Gsuite accounts) - then added a new mailbox migration.  It takes a few minutes but it then fails with the title of this question... really weird.

Any help is most appreciated.

Adam

Answer 5

Hi Adam,

As you said you just want the emails synced to Office 365 mailbox, may I know if you are using Office 365 IMAP Migration Configurations to migrate your Gsuite Mailboxes ( emails) to Office 365 mailbox? If so, please check if you have performed the correct steps in Office 365 side before you can successfully migrate it to Office 365 mailbox.  For more information, please refer to Migrate G Suite mailboxes to Office 365.

On another hand, if this is not your scenarios, please provide some screenshots about all the generated steps you did with me here for the further troubleshooting, and I will do more research for you, thanks.

Regards,

Oliver