Old mail is being deleted from Trash
I usually save old email in the Trash in case I need it later and I've noticed that periodically the oldest messages in my Trash are being deleted. I have my email set up as IMAP. In Settings, I have set "Remove" to "Never" and yet it still happens and I never empty the Trash. What is going on here? Am I going to have to create an "Archive" folder or something similar?
Macbook Pro, C2D, 15", 2.33GHz, 3GB RAM, 160GB HD, Mac OS X (10.5.6)