No contact names for activesync contacts

[zotova]

All of my contacts are stored on my mail server and sync'ed with my phone via activesync. Wifisms can find the numbers and names when I create a new message. However once the message has been sent it reverts to unknown contact listing the number below but no name.

On the left hand side I tend to get two entries, one for the conversation with the name and one for the conversation without the name - just the number. When sending a message it tends to appear in the number version and not the named version.

Please feel free to contact me for any more info.