Exchange Server Message UIDs Changing

[ruski]

Dear Friends,

 

I have a problem where the message ids (UID) in my mailbox are changing.

Let me first of all explain the environment, as its quite complex.

 

We have a ms exchange 2003 server running on a SBS, on that server we have a mailbox which is used for a sort of ticketing system.

This mailbox is used by an IMAP connection from our website via PHP.

Most of the information(not including the message) is stored in our mySQL database when ever a new message is received.

The users in our office are accessing these PHP pages each day to deal/reply to these messages.

Once a message has been dealt with it is recorded in the database as "read" and referenced by its message uid.

 

Today all of a sudden the messages which were dealt with yesterday all appeared as unread, this made me realise that the message UIDs changed.

 

Additionally this mailbox is also mapped as an additional mailbox on some user's outlooks, but the users do no have permissions to delete/move/etc these messages from the mailbox.

 

Any ideas or thoughts would be greatly appreciated.

 

Thanks in advance

Alex