What fcash said.
And it is a shame... having Outlook connect to Exchange via RPC over HTTPS was about the only thing that was stopping us from migrating.
I believe the Outlook-Exchange-specific RPC HTTPS stuff is a proprietory thing but it was darn good. Truly excellent for remote workers.
Not sure if the hotmail/gmail HTTP methods are the same as the Exchange one though.
I've found it slightly awkward to use ZCO compared to RPC over HTTPS.
Having to rebuild users' .zdb file/Outlook profile after a Zimbra upgrade or disaster recovery is a chore.
Our users could happily access 20GB mailboxes with RPC over HTTPS with cached mode on Exchange (obviously not all of it cached on the users machine though, just most recent stuff and any old headers).
I find ZCO becomes pretty nasty after about 4-5GB.
Really wish you could limit the size of the .zdb by having only the last x days of full mail stored and the rest headers or limit the amount of full mail to say 1.5GB of the .zdb and the rest is just headers.
But that's all discussion for the ZCO forum
