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Step 1: Prerequisite

April 13, 2018 | by iaur | posted as Cutover (EXO), M365 Migration

Checklist before you start

A maximum of 2,000 mailboxes can be migrated to Office 365 by using a cutover Exchange migration. However, it is recommended that you only migrate 150 mailboxes.

What can’t be migrated

  • Permissions
  • Rules
  • Distro list

*mailboxes, mail users, mail contacts, and mail-enabled groups.

*Move\Migrate batch by workgroup so that it won’t break any delegate and delegates relationship access

Check Migration Endpoints

Connect to Exchange Online Session

> Run the following commands

$Creds = Get-Credential

– credential of OnPremise admin

Test-MigrationServerAvailability -ExchangeOutlookAnywhere -EmailAddress <> -ExchangeServer <> -Credentials $Creds -RPCProxyServer <> -Authentication Basic


– EmailAddress = email address of any account you are going to migrate with same domain

– Exchange Server = the name of the Exchange Server. Check it by opening the Exchange Server > This PC or My Computer> Right click and check the FULL COMPUTER NAME

– RPCProxyServer = their OWA url without https. (Ex.

If the result is Success proceed on number 2.

Administrator: Windows PowerSheII 
PS C Set—ExecutionP01icy 
Execution Policy Change 
e execution policy helps protect you fræ scripts that you do not trust. Changing the execution policy night expose 
ou to the security risks described in the help topic at 
ttp•.//go.eicrosoft. you want to change the execution policy? 
PS C CebuAch'n. TIB213> exchangeSession New-PSSession -ConfigurationNme Microsoft. Exchange -ConnectionUri "htt 
ps://outlook. -Credential Scredential -Authentication "Basic" -Alloueedirection 
PS Import-PSSession SexchangeSession -DisableNMKhecking 
odu1eType Version 
Script i. O 
cmdlet Get-credential 
Supply values for the 
tmp—14wIi yo. 
. TIB213> SCreds - Get-credential 
at pipeline position i 
{Add-Availabi lityAddressSpace, Add-DistributionGrou*ember... 
PS Test-XigrationServerAvai1abi1ity -ExchangOut100kAnywhere -Enai1Address 
-ExchangeServer CebuEx2010.Tib213.ccm -Credentials SCreds -RPCProxyServer -Authentication Basic 
onnect i onsetti ngs 
ErrorDetai 1 
Ident i ty 
: 3e6bfe4a-3797-41ao-b663-5646f06d661a 
• Success 
: €Exchang«onnectionSettings 
Autodi scoverur 1 — 
Incomi nqRPCPr oxySer 1. t b213. com" 
InconngEmai IAddress—"" 
Inco—ingDomain—"" com" EncryptedInconingPassword—-AAMQAMAAEE 
ItLdtsSPt1utdRcfCJ61iPmfc4Q ServerVersion—- 
IsPub1icF01derXai IboxesYSgrationSource-Fa1se" 
: True 
: True

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