Change Mailflow

Question

Change Mailflow

Sree 1,966

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.

KyleXu-MSFT 25,616 Reputation points

2021-10-07T08:53:36.62+00:00

@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.
Sree 1,966 Reputation points

2021-10-15T17:45:18.683+00:00

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.
KyleXu-MSFT 25,616 Reputation points

2021-10-18T06:16:10.657+00:00

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

KyleXu-MSFT 25,616 Reputation points

2021-10-07T08:53:36.62+00:00

@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.
Sree 1,966 Reputation points

2021-10-15T17:45:18.683+00:00

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.
KyleXu-MSFT 25,616 Reputation points

2021-10-18T06:16:10.657+00:00

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

Answer 1

@JustinMicheal-7973

Here are information about create MX record to the Exchange online. You could confirm with your DNS provider:

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

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