I've noticed that the message headers exposed to an IMAP client in Exchange 2007 (SP2) are restricted compared to Exchange 2003. Strangely I can search for the header but can't retrieve its value. The message has this header as I can see it in "Message Options" in OutlookThis is from Exchange 2007 A4 SEARCH Header X-GLA-Spam-Report "DRUGS" * SEARCH 381 406 633 634 A4 OK SEARCH completed. A5 FETCH 381 BODY.PEEK[HEADER.FIELDS (X-GLA-Spam-Report)] * 381 FETCH (BODY[HEADER.FIELDS (X-GLA-Spam-Report)] {2} ) A5 OK FETCH completed.This is from Exchange 2003A4 FETCH 2037 BODY.PEEK[HEADER.FIELDS (X-GLA-Spam-Report)]* 2037 FETCH (BODY[HEADER.FIELDS (X-GLA-Spam-Report)] {304}X-GLA-Spam-Report: 2.0 ADVANCE_FEE_2 Appears to be advance fee fraud (Nigerian 419) 3.0 ADVANCE_FEE_3 Appears to be advance fee fraud (Nigerian 419) 0.3 DRUGS_SLEEP Refers to a sleep aid drug 2.0 ADVANCE_FEE_1 Appears to be advance fee fraud (Nigerian 419) )A4 OK FETCH completed.also I cannot perform a search in Exchange 2007 for the existance of a message with a specific header by usingSEARCH HEADERX-GLA-Spam-Score""but I can in Exchange 2003Is there any way to restore the expanded header behaviour in Exchange 2007's IMAP server?

This appears to be a change in 2007 SP2. The same test in Exchange 2007 SP1 Rollup 9 exhibits similar behaviour to Exchange 2003. Is this as expected?