I have just upgraded my iphone 4 with the new version (I know, I should've waited). Everything seems to be ok and there is nice feature added - native tasks sync.
There are however issues with mail sync, although everything else is just fine, calendar, address book, tasks.
I can't get any messages from zimbra mail accounts on ios 5. Older iphone continues to work fine with the same server. gmail account works fine on the new one. Since these are the most obvious combination that I tried first place, now I'm asking for help.
The only relevant message I can see in the mailbox log is this:
2011-10-12 20:26:14,934 WARN [btpool0-38]  log - SSL renegotiate denied: java.nio.channels.SocketChannel[connected local=/172.0.xxx.xxx:443 remote=/74.xxx.xxx.xxx:34043]
I'm also able to add new folder in mail account
2011-10-12 20:28:49,648 INFO [btpool0-38://mail.myserver.com/Microsoft-Server-ActiveSync?Userfirstname.lastname@example.org&DeviceId=Appl81 1xxxxxxx&DeviceType=iPhone&Cmd=FolderCreate] [email@example.com;mid=20;Cmd=FolderCreate;De viceID=Appl8xxxxxxxx;Version=2.5;] mailop - adding folder Bd: id=1001, parentId=1.