Server is running Exchange 2010 SP2. iPhone is running 6.1.3.
I have ONE user out of about 50 that is having problems occassionally when accepting (Or denying, etc.) meeting requests from internal users. They get an NDR stating the user who sent the meeting does not exist.
What we're seeing with the NDR is that it's messing up the formating of the original sender's email address. All of our internal users are Last, First in their syntax of display names. The NDR is showing
What it SHOULD be showing is -
All email addresses are in the format of firstname.lastname@example.org.
So no idea if it's the iPhone, activesync, what. This isn't happening for anyone else, and the user is fine if they accept meetings from Outlook.