zimbra to office 365

[Daaood]

Hi would anybody be able to assist me in migrating our current mailboxes from BGFL Zimbra to Office 365?

[foofighterjim]

Sorry, I just replied in the other thread. To keep things simple I will reply here. What exactly do you need help with? How far into the process are you?

[Daaood]

I have set up a new 365 domain and users.

I am at the point where I am migrating the mailboxes from BGFL Zimbra to Office 365.

this is the part i am stuck on at the moment. I need assistance in whats the bast way of doing this

[mikkydoos]

@Daaood

 

Link2ICT made this a large pain in the bum for me.

 

You need to ask them to enable IMAP on your Zimbra accounts. Get the IMAP server details from them, then use the USERS/IMPORT page in O365.

 

The pain for me was that they'd only let me IMAP 10 accounts per day. because it was too heavy a drain on their network! Sheesh!

 

I had to use a non .bham,sch.uk domain because they'd turn the IMAP off after half a day so the mailboxes would be out of sync after a couple of minutes.

 

I just told the users 'you have a new mail address from now' then forwarded mail from Zimbra to their new address. In the hols I moved the old domain to a new host, validated it in O365, set up the DNS etc etc.

 

Its a bigger pain than you think, and you're going to have some mail downtime.

 

 

EDIT: That was a couple of years back. Has it changed? I don't know. Maybe now they're pushing O365 themselves. I'd say phone to ask.

Edited March 2, 2016 by mikkydoos

[foofighterjim]

I had to use a non .bham,sch.uk domain because they'd turn the IMAP off after half a day so the mailboxes would be out of sync after a couple of minutes.

 

I just told the users 'you have a new mail address from now' then forwarded mail from Zimbra to their new address. In the hols I moved the old domain to a new host, validated it in O365, set up the DNS etc etc.

 

I did things slightly differently, I setup O365 with the new mailboxes. I then got the MX record changed to O365 so any new mail hit the empty O365 mailboxes. I then started the process described above to migrate the contents of the Zimbra accounts over to the live O365 ones.

 

It took some coordinating but I informed users of the change and from x date they would need to log into O365 to get new mail. Assuring them that their old email would be brought over ASAP, you may need to prioritise certain users.