When using exmerge to do a brick layer backup of a mailbox I've started seeing that if the mailbox is over 4 gigs in size the exmerge PST is only about one half that size. I'm pulling everything out of the dumpster so the pst should be roughly the same size as the mailbox. Also have noticed that if I try and import the exmerge pst it reports that it is corrupt and using scanpst does not correct the issue. I've got no confidence in the exmerge fuction. Is it me or is there a problem here that I'm unaware of???????