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Sree-6422 avatar image
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Sree-6422 asked JeffYang-MSFT edited

O365 migration

Can someone help me with few queries regarding O365.

  1. How do I export and import distribution list from one tenant to a another tenent

  2. How do I export online archive mailbox and shared mailbox

  3. While exporting the the mailboxes into pst, Will it also have users calender and contacts.

Kindly give me the answer for this.



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Hi @Sree-6422 ,

Is there any update about your issue? Do suggestions below help?

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Hi @Sree-6422 ,

Any update so far?

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1 Answer

joyceshen-MSFT avatar image
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joyceshen-MSFT answered AndyDavid commented

Hi @Sree-6422

1.How do I export and import distribution list from one tenant to a another tenent

A similar thread provided detailed steps here: How do I export Office365 distribution groups and import it to another office365 Tenant

 Get-DistributionGroup -RecipientTypeDetails MailUniversalDistributionGroup | Export-Csv -Path “C:\Users\Administrator\Desktop\Example01.csv"
 Import-Csv -Path "C:\Users\Administrator\Desktop\Example01.csv" | ForEach-Object {New-DistributionGroup -Name $_.Name  -DisplayName $_.DisplayName -Alias $_.Alias}

2.How do I export online archive mailbox and shared mailbox

How to export Exchange Online archive mailbox? and detailed steps to Export Office 365 Shared Mailbox to PST For Backup Purpose
Using Office 365 Compliance center and export to PST or export items manually from Outlook


3.While exporting the the mailboxes into pst, Will it also have users calender and contacts.

Yes it will, you could still use the methods above in compliance center or in outlook to export your mailboxes to PST include calendar and contacts.

Export O365 Mailboxes to PST


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In my scenario I have almost 50 user mailbox with more than 15 GB pst file size and in total 2.2TB. Can I do an export?
Is there any limitation in size to do an export of mailbox from portal?

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You can use Outlook to export that size
If you use the SCC and export that way, here are the limitations:

https://docs.microsoft.com/en-us/microsoft-365/compliance/export-search-results?view=o365-worldwide#export-limits
The maximum size of a PST file that can be exported is 10 GB by default.
Also, the search results from a specific mailbox won't be divided among multiple PST files unless the content from a single mailbox is more than 10 GB.
ou can export a maximum of 2 TB of data from a single Content Search. If the search results are larger than 2 TB, consider using date ranges or other types of filters to decrease the total size of the search results.

Your organization can export a maximum of 2 TB of data during a single day.




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