How to migrate mails from Google Apps to MS Exchange Online IMAP (Getting error)

Question

Any tips on How to migrate mails from Google Apps to MSOL? What is required? When I am trying to migrate using IMAP but getting fpollowing error
=======================
Summary: 1 item(s). 0 succeeded, 1 failed.
Elapsed time: 00:00:11
[email protected]
Failed
Error:
Failed to log on successfully for the following reason:
Server rejected Basic login with following message : * CAPABILITY IMAP4rev1 UNSELECT LITERAL+ IDLE NAMESPACE QUOTA ID XLIST CHILDREN X-GM-EXT-1 UIDPLUS COMPRESS=DEFLATE.
Exchange Management Shell command attempted:
'Microsoft.Exchange.Transporter.Provider.PopImap.InternetMailboxMeta' | Move-XsIMAPMailboxToExchangeOnline -AllowUnsecureConnection $false -TargetCredential 'System.Management.Automation.PSCredential' -MaxThreadCount '10' -Quiet
Elapsed Time: 00:00:11
======================
Any help will be much appreciated.
Regards
Sunil DK

Answer 1

I just finished migrating a client from Google Apps to Microsoft Exchange Online using the IMAP option in the Microsoft Online Services Migration Tool.  
I added the mailboxes by creating a CSV file [i.e. GoogleApps(Gmail)_Mailboxes.csv] in the following format:
SourceIdentity,SourceServer,SourceLoginID,SourcePassword,TargetIdentity
[email protected],imap.gmail.com,[email protected],P@ssword1,[email protected]
[email protected],imap.gmail.com,[email protected],P@ssword2,[email protected]
[email protected],imap.gmail.com,[email protected],P@ssword3,[email protected]
Then I created a custom folder map XML file [i.e. GoogleApps(Gmail)_FolderMap.xml] to map the Google Apps (Gmail) labels to the appropriate Exchange (Outlook) mailbox folders and create those that didn't exist (i.e. Important, Starred, Follow up,
Misc, Priority) as sub-folders under the Inbox:
<?xml version="1.0" encoding="utf-8"?>
<FolderMappings xmlns="http://tempuri.org/FolderMap.xsd">
<!-- This xml contains the mapping of foldername in source server to folders in target server -->
<!--
"path" is the name of the folder in source server
"Name" is the name of the folder to be mapped into target server
"SpecialFolder" is the name of the special folder to be mapped into
target server (Name will be ignored) valid values are :
Inbox
Calendar
Tasks
Sent Items
Deleted Items
Drafts
Junk E-mail
Contacts
Outbox
Journal
Notes
"Description" Description of the folder
"ExcludeFolder" indicates folders to exclude. Valid values are:
true (case sensitive)
false (case sensitive)
0
1
-->
<!-- Default Mapping Section -->
<Folder path = "INBOX">
<Property SpecialFolder = "Inbox"/>
</Folder>
<Folder path = "New Mail">
<Property SpecialFolder = "Inbox"/>
</Folder>
<Folder path = "[Root]">
<Property SpecialFolder = "Inbox"/>
</Folder>
<Folder path = "">
<Property SpecialFolder = "Inbox"/>
</Folder>
<Folder path = "Calendar">
<Property SpecialFolder = "Calendar"/>
</Folder>
<Folder path = "Tasks">
<Property Name = "Migration items/Tasks"/>
</Folder>
<Folder path = "Sent Items">
<Property SpecialFolder = "Sent Items"/>
</Folder>
<Folder path = "Sent Mail">
<Property SpecialFolder = "Sent Items"/>
</Folder>
<Folder path = "Sent">
<Property SpecialFolder = "Sent Items"/>
</Folder>
<Folder path = "Deleted Items">
<Property SpecialFolder = "Deleted Items"/>
</Folder>
<Folder path = "Trash">
<Property SpecialFolder = "Deleted Items"/>
</Folder>
<Folder path = "Drafts">
<Property SpecialFolder = "Drafts"/>
</Folder>
<Folder path = "Draft">
<Property SpecialFolder = "Drafts"/>
</Folder>
<Folder path = "Junk E-mail">
<Property SpecialFolder = "Junk E-mail"/>
</Folder>
<Folder path = "Spam">
<Property SpecialFolder = "Junk E-mail"/>
</Folder>
<Folder path = "Contacts">
<Property Name = "Migration Items/Contacts"/>
</Folder>
<Folder path = "Outbox">
<Property SpecialFolder = "Outbox"/>
</Folder>
<Folder path = "Journal">
<Property SpecialFolder = "Journal"/>
</Folder>
<Folder path = "Notes">
<Property SpecialFolder = "Notes"/>
</Folder>
<Folder path = "Public Folders">
<Property ExcludeFolder = "true"/>
</Folder>
<!-- Google Apps (Gmail) Specific Mapping Section -->
<Folder path = "[Gmail]/All Mail">
<Property ExcludeFolder = "true"/>
</Folder>
<Folder path = "All Mail">
<Property ExcludeFolder = "true"/>
</Folder>
<Folder path = "[Gmail]/Drafts">
<Property SpecialFolder = "Drafts"/>
</Folder>
<Folder path = "[Gmail]/Important">
<Property Name = "Inbox/Important"/>
</Folder>
<Folder path = "[Gmail]/Sent Mail">
<Property SpecialFolder = "Sent Items"/>
</Folder>
<Folder path = "[Gmail]/Spam">
<Property SpecialFolder = "Junk E-mail"/>
</Folder>
<Folder path = "[Gmail]/Starred">
<Property Name = "Inbox/Starred"/>
</Folder>
<Folder path = "[Gmail]/Trash">
<Property SpecialFolder = "Deleted Items"/>
</Folder>
<!-- Custom Mapping Section -->
<Folder path = "Follow up">
<Property Name = "Inbox/Follow up"/>
</Folder>
<Folder path = "Misc">
<Property Name = "Inbox/Misc"/>
</Folder>
<Folder path = "Priority">
<Property Name = "Inbox/Priority"/>
</Folder>
</FolderMappings>
Additionally, I had to tell the Internet E-mail Mailbox Migration Wizard to use the "Individual Account Credentials" option since I was able to specify each account password in the CSV file when adding the mailboxes to Microsoft Online Services Migration
Tools console.
Just to note, the users had to manually export their contacts to a CSV file and calendars to iCal (ICS) files in order to import those items into Outlook.
I hope this will benefit others since Microsoft doesn't seem to have a custom, specifically defined migration strategy for this scenario.  With Google Apps being in direct competition with BPOS/Office365, I assumed that Microsoft would have a simple
strategy using something like ActiveSync to facilitate the migration of email, contacts, calendar entries, etc.  Hopefully we'll see something along those lines become available in a future release of the migration tools.
--Jon Payne