Sony M600i - Manual (Page 15)

Exchange ActiveSync™ 15
due to timeout problems, matching root
certificates must exist on both devices to
enable a smooth reconnection. Otherwise you
will be prompted to accept the connection
everytime it goes down.
Check with your IT department which
certificates and settings you must use.
Note: It is not recommended to enable direct
push synchronization without having a
matching set of root certificates on the server
and the phone.
Technical support
If you need technical support, you can find the
Sony Ericsson support link from
Exchange
Activesync > More > About , where you can
also see which version of the software that you
are using.
If you lose your phone
If your phone gets stolen or lost, immediately
report the loss to your IT department.They can
do a remote wipe of secret or sensitive data on
the phone.