Hello,

There are a couple other posts about this but they end with explanations or solutions that aren't applicable in this case. Here's the problem:

I am migrating all of my personal email from Outlook to Gmail. My Outlook mailbox is about 1.4 gigs and is currently connected to an Exchange Server (2007), though only the last few years' worth of mail are actually Exchange; everything before that was POP.

The problem is that a huge number of my emails are showing up in Gmail as (unknown sender). I've read that this has to do with emails that come from a local address on your exchange server, though none of mine do (mine is the only account) -- and what's more, the emails that show up this way seem to be almost entirely from before I switched to Exchange. All the messages I've archived since switching to Exchange a few years back seem to be okay.

My first attempt was with the Google Email Uploader. I've tried setting up my Google Apps account via IMAP and trasferring them via drag-and-drop. I've set up a Mercury mail server on my local machine and transferred them via that  intermediary, using Vista's WinMail and then Google's mail fetcher to get them off of the Mercury server. It all turns out exactly the same way. I haven't tried using Thunderbird to do the actual IMAP transfers by hand yet as I've sunk the last 24 hours or so into this and figured it was time to ask for help before sinking more.

The only reference I was able to find to anyone solving this problem (outside of removing things like ClearContext, which I don't have) was to scrub various Microsoft email headers off of every single email. I don't know how to do this or which headers I'd be looking for. Any suggestions?

Thanks so much,
SK