Version 15.7.6411 (Jul 21, 2017) Fixed: Exchange Web Services could enter a deadlock state causing mail service to become unresponsive. Fixed: Let's Encrypt http-1 verification challenges are being improperly intercepted by WebDAV handler. Fixed: Pop retrieval is really slow if messages end with only a carriage return (\r). Fixed: Shared ...

Version 15.7.6390 (July 4, 2017) Fixed: A plain text message can lose line breaks when displayed in HTML or when replied to. Fixed: Attempting to retrieve an email attachment via Exchange Web Services intermittently throws an exception. Fixed: Certain spam checks could negatively impact system performance due to missing RegEx ...

Version 15.6.6347 (May 19, 2017) Efficiency: Significantly reduced the load time for large calendars from their XML file Fixed: A disabled mailing list is no longer useable if list error replies are disabled Fixed: Abnormally large e-mails no longer cause Exchange Web Services clients to crash Fixed: Accepting meeting invites marked as ...

Version 15.5.6222 (02-03-2017) Added: Auto-discovery configuration settings specific for Outlook 2007 and Outlook 2010. Fixed: Adding a contact from the TO or CC field dropdown menu no longer results in an Oops page. Fixed: Address information containing commas and synced with CardDAV no longer prefixes the comma with backslashes. Fixed: ...