Hybrid Migration from Exchange 2016 to office365

Anonymous

Hi MS,

I am in the planing phase of doing 10 users Pilot Hybrid migration to office 365 in E3 plan using our Volume licence.

We have two 2016 exchange servers running in DAG

We also have email filtering done via Mimecast and for purpose of this exercise i want to leave email filtering to mimecast and not use EOP.

I want to get a clear idea of exact steps I need to take to configure this.

However, before I do anything i want to make sure it does't affect our SMTP or any other users from reading tons of articles and some previous experience with office 365 this are the steps i think needs to be performed.

use exchange server deployment assistance

- check prereq - all good

My questions Questions are

On step 14

If i add this TXT record this will not affect any mail flow this is purely for domain verification?

Question 2

on the step 15 -29 here

https://technet.microsoft.com/en-us/exdeploy2013/Checklist?state=3229-W-EwAIAAAAQAAAAAEAAAAAACAAAABEaAOFAAA~

will that affect any existing mail flow or existing connectors as we have few there

Question 3

overall understanding is mailflow will still be going through exsting exchange server and other 240 users will not be affected and not other server or services such as smtp, scanning service will be affected due to this.

We never need to change MX records and we don't have to make any changes to mimecast?

Please clarify these ASAP, would be really appreciated.

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58 answers

Anonymous

2018-03-14T03:45:44+00:00

Hi Erick,

We have implemented Hybrid 0365 now in pilot stage.

We have 3 users synced and migrated now, mail flow is working

Since we are on Exchange 2016 we used remote migration to migrate user

User 1 550 MB mailbox upload time 7 mins During the day GMT +8

User 2 9GB GB mailbox upload time 3 hours 5:30pm

User 3 6.7 GB mailbox upload time 3 hours 9:00am

That url doesn't talk about remote migration, how can we speed things up? Throttling doesn't apply in our seniario?

Firewall ports are open and we have 100MB/100MB fibre link

Thanks
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Anonymous

2018-03-12T09:34:12+00:00

Hi Roy,

Many factors will affect the performance of the migration. Generally, single mailbox move throughput is in the 0.3-1.0 GB/hour. It also depends on your network and other aspects. We recommand you do it on weekends. It is good for users. You can check the detailed information in the link below:

https://support.office.com/en-us/article/office-365-migration-performance-and-best-practices-d9acb371-fd6c-4c14-aa8e-db5cbe39aa57#bk_o365throttling

Best Regards,

Erick
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Anonymous

2018-03-12T03:41:42+00:00

Hi Eric,

We are implementing office 356 hybrid from today.

Just wanted to get maximum rate of upload from one tenancy is allowed? If there is any way we can increase that rate temporarily or permanently as we have 250 mailboxes to sync up. Even though we have 100/100 mb connection we do have lots of data to upload.

We are not going with the network drive ship to MS option.

The setting i found related to this was MRS proxy enable

We don't want to upload pst files we would prefer to do it as move mailboxes to exchange.

We do have users with 47 GB mailboxes at the moment.

Thanks

Regards

Roy
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Anonymous

2018-03-11T09:56:52+00:00

Hi Roy,

Have you any further questions?

Best Regards,

Erick
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Anonymous

2018-03-08T09:59:56+00:00

Hi Roy,

If you set up the connected account successfully, emails will go to your inbox folder of the Office 365 account. You can go to there to check it.

Best Regards,

Erick
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