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Mail not being delivered between Office 365 and on-premise Exchange during cut-over migration.
I am doing an Office 365 cut-over migration from Exchange 2010. I moved a couple mailboxes and now user's whose mailboxes are still on Exchange 2010 cannot send to mailboxes that have been moved to Office 365.
I successfully ran the Office 365 hybrid configuration.
In office 365 I added connectors from "Your organization's email server" to Office 365 and from Office 365 to "Your organization's email server."
What do I need to do to get mail flowing between mailboxes still in Exchange 2010 and mailboxes that have been moved to Office 365?
I successfully ran the Office 365 hybrid configuration.
In office 365 I added connectors from "Your organization's email server" to Office 365 and from Office 365 to "Your organization's email server."
What do I need to do to get mail flowing between mailboxes still in Exchange 2010 and mailboxes that have been moved to Office 365?
ExchangeMicrosoft 365
Last Comment
Richy Innes
ASKER
I'm doing an express migration cutover. Once all mailboxes are on Office 365, I'll stop the syncing.
Also check that you can telnet out to Exchange online protection on port 25 from your EX2010 server. Check the MX records for the .onmicrosoft.com domain for your tenant and that's what you should do the test telnet to.
Are you using this process? - https://docs.microsoft.com
ASKER
I am using that process. I am at step five
When I look at the domain .onmicrosoft.com, the only DNS records are v=DKIM1 txt records
When I look at the domain .onmicrosoft.com, the only DNS records are v=DKIM1 txt records
The migrated users should have the routing address of tenantname.mail.onmicrosof
ASKER
I'm missing that send connector. Can you let me know how it should be configured? Should the MS Office 365 hybrid configuration have created that?
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ASKER
I added the connector but still not working.
This migration uses both domaincom.onmicrosoft.com and domaincom.mail.onmicrosoft
The users logins on premise are three initials and their email address is full name. The user's attributes in on-premise active directory is fullname@domain.com, fullname@domaincom.mail.on
The office 365 mailbox has fullname@domain.com, fullname@dcbflegalcom.mail
The bounce back when sending from an on-premise mailbox to an Office 365 mailbox shows
fullname@domaincom.mail.on
BL2NAM02FT005.mail.protect
This migration uses both domaincom.onmicrosoft.com and domaincom.mail.onmicrosoft
The users logins on premise are three initials and their email address is full name. The user's attributes in on-premise active directory is fullname@domain.com, fullname@domaincom.mail.on
The office 365 mailbox has fullname@domain.com, fullname@dcbflegalcom.mail
The bounce back when sending from an on-premise mailbox to an Office 365 mailbox shows
fullname@domaincom.mail.on
BL2NAM02FT005.mail.protect
For the Office 365 connector "Your organization's email server" to Office 365" is the correct external IP address configured for where the mail is being sent from?
This address fullname@domaincom.mail.on
This address fullname@domaincom.mail.on
ASKER
It is working now. Adding the send connector and updating mail.onmicrosoft.com fixed it.
Thanks
Thanks
Good to hear it is resolved.
Cheers,
Richard
Cheers,
Richard
If hybrid, the wizard should have created a send connector to Office 365 and you should see it under send connectors. Check queue viewer on EX2010 to see if the messages are being queued.