With 7269 on a test vm it works with outlook on android, but we're not really willing to take the risk to install beta's on a 22k+ accounts production server.
Maybe it also works for your iOS issue ?
It would be good to have this backported to the current "stable" versions, our customers are urging us to fix this or will find another service provider...
"you CAN NOT downgrade back to a previous version due to the extensive file system changes that were made. "
This is mostly why we can't risk to update our prod server. We have snapshots on our NetApp filer but if the file system changes are related to the user's data, if we rollback a snapshot we would have to rollback domains data too and lose content received while running the beta.
It would be nice to know exactly what changes are made to which files when installing the beta.