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Clint JonesFlag for United States of America

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Dual Delivery Email routing between MS Office 365 Enterprise Exchange Online and Google Business Apps

I need help with email dual delivery or possibly split delivery.  I understand what both are and their different roles.

My issue is figuring out the best way of going about this and just not adding DNS MX records and priorities.

I planned on but will wait for advice on using microsoft as my primary mail server and either making a connector for business partner as

microsoft verbiage goes and sending onto google but again not sure how with Microsoft or if this is the best way to go.

Scenario:  I have Google for Work (Google Business Apps) which is 5.00 a month per user.  I am partial moving to Office 365 Enterprise E5

which is 35.00 per user not including PSTN.

I have 2 domains and my primary domain is computerteks.net and secondary is nashvilleteks.com.

Computerteks.net is at the the moment tied to google and 3 users mailboxes and nashvilleteks.com is tied to one user mailbox with microsoft 365.

I am waiting to use computerteks.net as primary email address for both email hosting companies (Google and Microsoft).  I would like to keep users let say - Office@ and Support@ plus additional users in the future on Google.

Reason for the moment is expense 5.00 versus 35.00 for each user. I don't want to use forwards or groups for real use inboxes that need to be separate for say mine or other users.  I will use groups when necessary but for the moment.

I would like clint@ on office 365 and support@ and office@ on google.  Would be the ultimate possibility!
 
I have read alot on both sides where google will send non-google emails to another party and do dual delivery.  Microsoft is little more complex

I am familiar with exchange 2010 and 2013 on permise in house.  Not doing that but familair with using exchange but not so much:

Exchange Online learning the difference as I go.

This is what I am ultimately trying to accomplish what I mentioned above.  Below is quick advice for the moment.

Quick advice???  Can I do dual delivery to both google and microsoft for the moment making both primary but only choosing one to send mail from? I would like clint@ to get at both microsoft and google at the moment but I plan choosing one to send and reply emails to while letting the other

just get a copy so there in both places until I get this all worked and perfected.

Thanks in advance and if possible step by steps or links if possible.

Help and education is greatly appreciated.

Thanks, Clint
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David Johnson, CD
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AFAIK you can't have user1,user3,user5 on one mail server and user2,user4,user6 on another mail server.
A person sending you an email will send it to the mail server in the MX record. The mail server will check its user base and not finding a user will respond with a NDR saying 'no user of that email address here'.  You will need a mail relay in between. I.E MX record points to mail relay.. mail relay knows that user1,3,5 go to gmail, and users 2,4,6 go to o365
You can get those small users e1 plans or exchange online plans for similar prices to google. It's not e5 or nothing...
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David want I am looking at in your scenario is Mail flow -> Connectors in Exchange online

where you choose where to send "TO" and "From" connections.

Specify your mail flow scenario, and we'll let you know if you need to set up a connector.

Which business partner connections is what I was looking at!

Office 365: Your cloud email subscription.

Your organization's email server: This is an email server that you manage. It's often called an on-premises server.

Partner organization: A partner can be an organization you do business with, such as a bank. It can also be a cloud email service provider that provides services such as archiving, anti-spam, and so on.

Internet: For inbound email, this refers to email that's sent from the Internet to Office 365 (not to your email server or partner organization). For outbound email, it refers to email that's sent from Office 365 to the Internet (not to your email server or partner organization).


and Aaron I was looking to see if I can keep some users in 8.00 a month E1 and some on E5 by going into admin -> Purchase subscriptions and choose a license for E1 which would make office 365  cost effective.  I haven't gotten a clear answer from microsoft support on the practice.

Its have noticed 2 things: Support wise not everyone is update on the E5 and deprecated E4 plan and PSTN voice and 2nd documentation online has not been updates either it still stuck on the Lync terminology with is skype now and most references are late 2014 and early 2015 before these plans were made available.  Their always slow to update but things are getting better it seems.

Looking over both your suggestions and thanks for the input.
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Aaron Tomosky
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Thanks Aaron!

I submitted it thur my admin center -> Support with Microsoft after I initially read your post.  

Microsoft licensing hasn't always been end user friendly so I hadn't taken on the task with interchanging different licensing under the same centralized subscription center for all users.  If so then it will be cost effective to completely go to microsoft completely.

Thanks for both as david help study mail flow but using google in Mail routing and delivery: Guidelines and best practices is the best way to go before I do the migration for mailboxes using microsoft migration with exchange online.
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Juan carlos

In this case, he must have setup the email in both servers (google and microsoft). I have the same need, but I think this solutions works only if have set up the email in both email servers.