365 to Gmail

[Frazzle]

If all users are using 365 currently using schooldomain.com and we want to move to Gmail can we keep the same domain name and do a migration across? Would it have to be a big bang cutoff or can the migration be slower? School want some users to transfer first and then the rest gradually.

[ZeroHour]

Its not particularly clear on: https://support.google.com/a/answer/6003169

You can migrate selected users but it doesn't mention what happens with the MX records, if you move MX records mail will flow into gmail but the migration tool *may* automatically redirect non migrated accounts to o365 but without it being shown somewhere I wouldnt expect it.

I have had users on both systems before but its a fairly manual process to setup the forwarding properly and I had to use quite a workaround to get mail flowing but that was with o365 infront of some users on google apps.

[FN-GM]

It will be possible yes with routing rules. I did the migration for 4 schools (apart to start 5th) and it was a big bang for them all.

 

For the Migration I used this with IMAP https://tools.google.com/dlpage/exchangemigration. It worked much better than the web version you get with G Suite.

 

I found it had left lots or empty folders in Gmail. These commands in GAM get rid of them.

gam all users delete label "_Archive"

gam all users delete label "_Outbox"

gam all users delete label "Calendar"

gam all users delete label "Clutter"

gam all users delete label "Contacts"

gam all users delete label "Journal"

gam all users delete label "Junk Email"

gam all users delete label "Notes"

gam all users delete label "RSS Feeds"

 

Also any folders under the Inbox are separated off into separate labels and not nested. This will tidy them up and put them under a parent folder called Emails

 

gam user [email protected] add label Emails

gam user [email protected] update label search "^INBOX/(.*)" replace "Emails/%s"

[Frazzle]

So them wanting to keep majority of staff using 365 and some on Gmail but using same domain won't work?

[FN-GM]

It is possible to do yes. But it is complex. You need to setup mail routing rules