I work for a small non-profit organization. We have about 35 administrative employees who use e-mail. We're on a Windows network with a domain. Everyone is running XP Pro and Office 2007 with all updates/patches.
We used to use POP3 mail through a local provider. However, we recently signed-up for a free Google Apps account, and we switched to IMAP mail through Google. Everyone uses Outlook 2007 as the client.
For about ten days, everything was working fine. Yesterday afternoon, we suddenly developed a strange and annoying problem. Every time you send an e-mail message, a copy of your outgoing message shows up in your inbox. It's as if you're adding your own address to the CC: line of every message.
Nothing has changed on our end. I was hoping that the problem was a temporary glitch that would resolve itself, but here we are about 24 hours later, and it's still happening.
I searched Twitter, and there were a handful of vague messages about issues with Google mail and IMAP, but I didn't see any references to this specific problem.
Any thoughts on what's going on here and how to fix it?