Is it possible, on zimbra 5.0.18, to redirect sync requests between store servers on a multi-server install?
You have two store servers in your multi-server install, well call them server0 and server1.
UserA's account is located on server1.
You have a public facing round-robin DNS for mail.domain.com setup, so that webmail users can point their browsers to mail.domain.com, and when they login, their redirected to the appropriate store server.
Now, UserA has an iPhone, or some other active-sync device. They point their device at mail.domain.com, and the round-robin DNS points them to server1, out of luck. Everything works, everyone's happy.
Next time around, the round-robin points them to store0. Now, the sync fails, because the users account isnt actualy on store0, its on store1.
Is there some way to get sync requests sent to store0, to redirect to store1, if the user exists on store1, and the reverse as well (store1 redirects to store0 if user exists on store0)?