question

Sree20212021 avatar image
0 Votes"
Sree20212021 asked KyleXu-MSFT commented

Change Mailflow

Need to change the Mail flow from "on-prem" to Office365.
Change MX Record from On_prem to O365
because the existing On-Premise Email Gateway already Expired and not scanning.

office-exchange-online-itprooffice-exchange-server-mailflowoffice-exchange-server-connectivity
· 3
5 |1600 characters needed characters left characters exceeded

Up to 10 attachments (including images) can be used with a maximum of 3.0 MiB each and 30.0 MiB total.

@JustinMicheal-7973
I am writing here to confirm with you any update about this thread now?
If the suggestion below helps, please be free to accept it as an answer for helping more people.

0 Votes 0 ·

Hybrid Exchange (70% on cloud – 30% at On-Prem Exchange 20219)
MX Record is pointing to On-Prem Exchange
'I want to change Change MX Pointer from On_prem to On-Cloud Exchange, On-Prem Email Gateway has expired
On-Premise Email Gateway already Expired and not scanning) the smart-host (Symantec Email gateway) subscription has been expired therefore it stopped the inbound scanning.
domain is hosted locally (on-prem), (exchange also hosted on-prem but we migrated to hybrid-exchange since last 1 year)
it was working properly until we had valid subscription.
we need to change the MX Pointer from ON-Prem to On-Cloud so that all inbound email directly land on Microsoft O365 tenant and scan.

I would like to verify the “SFP,DKIM” configuration because we recently Disabled the “Central Mail Flow” where all email now going out directly from Exchange-Online.

0 Votes 0 ·

You just need to switch MX from Exchange on-premises to Exchange online. About the SPF record, you could have a look about this article.

SPF only for Exchange online:
TXT Name @
Values: v=spf1 include:spf.protection.outlook.com -all

0 Votes 0 ·

1 Answer

KyleXu-MSFT avatar image
0 Votes"
KyleXu-MSFT answered

@JustinMicheal-7973

Here are information about create MX record to the Exchange online. You could confirm with your DNS provider:
137273-qa-kyle-10-22-52.png

Once email is flowing to Exchange Online, you should remove the MX records that are pointing to your old system.


If the response is helpful, please click "Accept Answer" and upvote it.
Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.


5 |1600 characters needed characters left characters exceeded

Up to 10 attachments (including images) can be used with a maximum of 3.0 MiB each and 30.0 MiB total.