I'm having some issues with calendar invites. I have 2 users in my Grommunio community system. Both users are using iPhones with ActiveSync and Outlook on windows connected by MAPI. Both users and all their devices as well as the Grommunio appliance are in the US Eastern time zone and are configured as such. When either user invites the other to an event they create using their iPhone the event shows as GMT in the other persons Outlook and thus shows the event occurring 4 hours later than reality. The event shows properly on all iPhones and properly in the creators Outlook. It seems something is wrong with the way the invitation is being crafted. I also tested inviting an outside user using MS Office 365 to an event I create using my iPhone and my Grommunio account, the invite works properly for them. I also note that in the Outlook invitation they get there's a message saying "This meeting has been adjusted to reflect your current time zone. It was initially created in the following time zone: tzone://microsoft/Utc". I don't get this notice on invitations sent to my Grommunio account. So it appears Microsoft Office 365 is doing some processing to correct this issue before it gets to the user?
It's important to note that this issue only occurs with recurring events. This also only happens with invites created on the iPhone, if I create the event in Outlook on Windows everything is fine. Any idea what's going on here?