Merge pull request #156 from ssvsergeyev/develop

Fix for ZEN-11090
Merge remote branch 'vova/develop' into develop
Merge pull request #32 from ssamartyn/develop

Improved Exchange 2013 support
Merge remote branch 'vova/develop' into develop
Merge pull request #157 from ssvsergeyev/develop

ZEN-11059: fixed connection refused message
Merge remote branch 'upstream/develop' into develop
Fixed ZEN-11048 issue
Merge pull request #33 from ssOleg/develop

Fixed ZEN-11048 issue
Small fix for correct support old Exchange servers
Merge remote branch 'upstream/develop' into develop