Email Dual Delivery Between Exchange Server And Google Workspace

Question

Email Dual Delivery Between Exchange Server And Google Workspace

Tekpham 16

Dear Team,

I am looking at configuring a dual delivery between Microsoft Exchange Server and Google Workspace.

I am running a two mail servers system between the Microsoft Exchange Server and Google Workspace. The MX record points to Microsoft Exchange Server, that's email comes through the Microsoft Exchange server.

Kindly help with steps to configure a dual delivery on the Exchange Server 2013 that route inbound email to the correspond email address in Google workspace.

I look forward to your assistance.

Best regards,

2 answers

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Answer 1

Kael Yao 37,721

Hi @Tekpham

Thanks for the clarification!
So The problem should be both Exchange and Google Workspace sharing the same domain.
And the user mailbox shares the same email address user@Company portal .com.

To my knowledge, you may need to create subdomains and point them to Exchange and Google Workspace for mail routing.
Here is a link for your reference: Perform a Google Workspace (formerly G Suite) migration

It is about Google Workspace migrating to Exchange Online, while I suppose it may still be helpful.

Since the email address is same, I am not sure if routing to ASPMX.L.GOOGLE.COM would work (I suppose it may also need a different email address)
Here is also a link for your reference: How to: MS Exchange and Google Apps Split Delivery for single domain name (K-12 School Sample Shown)
(Please Note: Since the website is not hosted by Microsoft, the link may change without notice. Microsoft does not guarantee the accuracy of this information.)

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Tekpham 16 Reputation points

2021-06-17T09:45:20.933+00:00

Thank you for your support.
I appreciate your time and effort to assist me on the issue.

I will look at your suggestions in your previous message

Best regards.
Kael Yao 37,721 Reputation points

2021-06-23T01:56:10.35+00:00

Hi @Tekpham

I am writing here to confirm with you how thing going now?
Did the suggestions help?
MainK 0 Reputation points

2023-08-18T15:17:01.89+00:00

Good morning Kael Yao-MSFT, I have a situation to remove the dual delivery once used the PS cmd, can you help please?

Answer 2

Kael Yao 37,721

Hi @Tekpham

I noticed you mentioned "correspond email address in Google workspace", did you mean you have correspond email addresses in Google workspace for each mailbox on Exchange server? If so, I suppose that you may follow this document to set email forwarding for mailboxes on the Exchange server: Configure email forwarding for a mailbox

EAC: 1.You may first need to create mail contacts in EAC for the mailboxes in Google workspace 2.then access EAC, recpients> mailbox > edit mailbox > mailbox features > Mail Flow > View details 3.configure Forwarding and select the mail contact as recipient, also select "Deliver message to both forwarding address and mailbox" check box to deliver the inbound messages to both the mailbox on the Exchange server and the one in Google workspace

EMS:

You don't need to create mailbox contacts and can simply run the following command to enable forwarding for a mailbox: Set-Mailbox -Identity <mailbox> -DeliverToMailboxAndForward $true -ForwardingSMTPAddress <email address in Google Workspace>

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Tekpham 16 Reputation points

2021-06-10T10:30:43.71+00:00

Thank you KaelYao-MSFT for taking out time to respond.

What I want to achieve is email Dual Delivery. Let me break it down so you can help me.

I have Exchange Server hosts and receives emails for thousand of users.
I am planning to migrate like 400 mailboxes to Google workspace. However, the 400 mailboxes still reside on the Exchange Server.
I want to keep my Exchange Server to continue receiving emails for all the users (Exchange and Google workspace). That's MX record is still point to Exchange Server.
I want to configure the Exchange Server to deliver emails to both Exchange and Google workspace users at the same time (Dual Delivery)

I am looking for steps to configure Exchange Server to send emails it receives on behave of the 400 Google workspace users to Google workspace mailboxes.

I look forward to hearing from you.

Thank you,
Kael Yao 37,721 Reputation points

2021-06-11T09:18:57.52+00:00

Hi,

Thanks for the information.

While I suppose the suggestions in my former reply should work for you in this scenario.

The general steps would be like:
1.create new mailboxes in Google workspace for the 400 users
2.setup email forwarding for the mailboxes on Exchange server as in my former reply, to forward emails received by Exchange to the newly created mailboxes in Google workspace

Since MX record is pointed to Exchange server, an inbound email will first be sent to the mailbox on the Exchange server.
And due to the forward settings of the mailbox (forward emails to the correspond mailbox in Google workspace), Exchange will forward the email to the mailbox in Google workspace.
If "Deliver message to both forwarding address and mailbox" is selected, Exchange will also keep a copy of the email in the mailbox.
In this case, both Exchange and Google workspace will receive the email.

If I misunderstood something, please feel free to correct me.
Tekpham 16 Reputation points

2021-06-12T09:57:02.267+00:00

Thank you for your response.
I was hoping to setup a Mail Flow from Exchange Server to Google workspace mailboxes.

Bear in mind that the domain name is the same on both Exchange server and Google workspace.
For example, it will be user@Company portal .com on Exchange Server and user@Company portal .com on Google workspace.

With configuring email forwarding on Exchange server using primary email as user@Company portal .com and forwarding email also as user@Company portal .com. How will Exchange server understands it is send to user@Company portal .com domicile in Google workspace

Currently, I do not know how to set it up, however, I know it is required to setup Mail Flow rule on Exchange server that forward all mail to ASPMX.L.GOOGLE.COM.

Please advise
Ajahuana 1 Reputation point

2022-08-21T03:23:27.157+00:00
You can config if Gmail as primary server(Workspace)
Use basic routing settings to set Gmail as the primary server for dual delivery.

If you haven’t yet, add the route for the legacy server.

Do the initial steps to sign in, select the organization if necessary, open the Routing setting, and enter a description for the new setting.

For email messages to affect, select Inbound, or Internal-receiving, or both.

Set up an envelope filter if you want the rule to affect only specific envelope senders and recipients. You can specify single recipients by entering an email address for that user. You can also specify groups.

Under For the above types of messages, select Modify message.

Under Also deliver to, select Add more recipients then click Add to add the secondary mail route.

Under Recipients, click the Down arrow "" and select Advanced.

Select Change route.

From the list, select the secondary mail route.

Scroll down and click Save.

Configure more parameters as needed.

Save the configuration.

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Email Dual Delivery Between Exchange Server And Google Workspace

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