Hybrid Migration from Exchange 2016 to office365

Anonymous
2018-02-15T08:36:09+00:00

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.

  1. 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.

Microsoft 365 and Office | Subscription, account, billing | For home | Windows

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  1. Anonymous
    2018-03-07T12:13:04+00:00

    just one little off topic.

    I have connected one of my pop email into my offfice 365 its connected but how do i access those emails?

    I have followed this and its connected but how do i view those emails from that pop3 account

    https://support.office.com/en-us/article/connect-email-accounts-in-outlook-on-the-web-office-365-d7012ff0-924f-4f78-8aca-c3912d886c4d

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  2. Anonymous
    2018-03-07T11:10:35+00:00

    Hi Roy,

    Do you have any further questions?

    Best Regards,

    Erick

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  3. Anonymous
    2018-03-04T09:39:31+00:00

    Hi Roy,

    I noticed that you deleted the domain name in another old tenant and you cloud add the domain name successfully.

    About shared mailboxes, you can migrate them via the remote migration like the screenshot below.

    Here is a reference:

    https://technet.microsoft.com/en-us/library/o365e_hrcmoverequest_fl312271(v=exchg.150).aspx

    For the Distribution Groups, you can mail enable these groups and sync them to cloud. However, if your mailboxes are all in the cloud, we recommend you create distribution groups directly in cloud.

    About the “Import user pst file”, this is another feature. If you have created mailboxes in cloud and have related pst files, you can use this feature to import files to related users.

    Stage migration and Hybrid migration (remote migration) are different. Therefore, the answer is no. However, you can still move 25 users first if you want when using Hybrid. At that time, you keep some users on-premise and some users in cloud.

    Best Regards,

    Erick

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  4. Anonymous
    2018-03-02T08:28:53+00:00

    Also, little confuse with these two articles

    Import user pst file

    https://support.office.com/en-us/article/use-network-upload-to-import-your-organization-s-pst-files-to-office-365-103f940c-0468-4e1a-b527-cc8ad13a5ea6?ui=en-US&rs=en-US&ad=US

    Is that only for archived or live mailbox as well?

    Or 

    To create a staged migration batch

    https://support.office.com/en-us/article/perform-a-staged-migration-of-email-to-office-365-83bc0b69-de47-4cc4-a57d-47e478e4894e?ui=en-US&rs=en-US&ad=US#prepareforcutover

    So if i understand this correctly, we have both options to migration users? I can do stage with 25 user at a time if  I want to? We have 250 user with some huge mailboxes 50gb.

    This is for current live mailbox?

    Just want to make sure if we have both options then which is better to use?

    Thanks

    Regards

    Roy

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  5. Anonymous
    2018-03-02T05:47:09+00:00

    Thanks Eric,

    Now once we done all the above steps, at the time of migrating 

    Shared mailbox and distribution groups. 

    This is the only good referce i can find. 

    https://support.office.com/en-us/article/upgrade-distribution-lists-to-office-365-groups-in-outlook-787d7a75-e201-46f3-a242-f698162ff09f?ui=en-US&rs=en-US&ad=US#bkmk\_which

    But it doesn't mention anything about shared mailboxes and external contacts.

    How do we migrated them?

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