IceWarp Server Deep Castle 2 Update 1 (13.0.1.1)
Release date: 2021-03-16
Changelog:

* WebClient - Fixed an issue with drag & drop of attachments into mailcompose not working sometimes 
* WebClient - Fixed an issue with missing newlines in notes in the calendar events that are scheduled as a conference 
* Outlook Sync - Fixed digital signature of the application 

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IceWarp Server Deep Castle 2 Update 1 (13.0.1.0)
Release date: 2021-03-04
Changelog:

* WebClient - Fixed an issue with URL in invitations to Microsoft Teams meeting 
* WebClient - Fixed an issue with long emails slowing down the mailcompose in WebClient significantly 
* WebClient - Fixed an issue with the rule "Move to folder" unable to set up 
* WebClient - Fixed an issue with notification settings for Guest accounts in TeamChat 
* WebClient - Fixed an issue with folders unable to expand during the drag & drop in WebClient 
* WebClient - Added visibility of the Current time next to the Proposed time in the Calendar 
* WebClient - Fixed an issue with accepting events already accepted as Tentative 
* WebClient - Added "Tentative" as an additional option to Accept and Decline in the new calendar events 
* WebClient - Extending list of available calendars by TeamChat rooms when creating new events 
* WebClient - Fixed an issue where users are unable to save messages in EML format 
* WebClient - Fixed an issue with messages from the Quarantine having damaged HTML body 
* WebClient - Improved text and image resolution in the calendar events 
* WebAdmin - Fixed an issue where Admin could not delete the domain when "C_Domain_Cannot_Be_Renamed" is on "True" 
* WebAdmin - Fixed an issue with the rule "Delete mail older than" in the console not working at all 
* WebAdmin - Fixed an issue where Admin cannot manage licensing for Outlook Sync and IceWarp Desktop Client in the console 
* Server - Fixed an issue with access violation error while using wildcard in a tool.sh command 
* Server - Fixed an issue with the Autoclean rule where API C_system_adv_process_new_day or "run now" would not work 
* Server - Fixed an issue with the Control module repeatedly hanging during the day for an unknown reason 
* Server - Fixed an issue with AccountCache change notifications influencing incorrectly other services 
* Server - Fixed an issue with push notifications not being sent (iOS/Android) for newly created guest accounts 
* Server - Fixed an issue with broken formatting of notes in the calendar events that are scheduled as a conference 
* Server - Implemented changes to the server installer for Linux rewriting configuration files during the upgrades 
* Server - Fixed an issue where exception occurs, causing value not being changed when changing domain-related values via tool.sh 
* Server - Fixed an issue with displaying message content when using "Insert code" in Instant Messaging 
* Server - Fixed an issue that used to cause a 1-hour difference in the calendar events 
* Server - Fixed an issue with content filter "Smartattach" not applying to attachments at all 
* Server - Multiple performance and stability improvements
* Server - Added support for joining and scheduling Conferences from TeamChat Mobile app
* Outlook Sync - Fixed an issue where emails in Sent items started to get duplicated when server got upgraded to DC2 
* Outlook Sync - Fixed an issue where events in the calendar cannot be fully synchronized 
* Outlook Sync - Fixed an issue where Outlook Sync could not be activated even though it has a valid license 
* Outlook Sync - Fixed an issue where Outlook Sync does not attempt to activate the license during the clean installation 
* Exchange Active Sync - Fixed an issue on EAS devices prompting users to enter their passwords 
* Exchange Active Sync - Fixed an issue where ITIP notification to event Organizer is not sent on Apple devices