This website is deprecated, and remains online only for historic access to old issues and docs for historic versions of Virtualmin. It has been unmaintained for several years, and should not be relied on for up-to-date information. Please visit www.virtualmin.com instead.
What email client are you using? What if you log in via Usermin on port 20000, do you see all your mail then?
-Eric
Yes that is what I use. Turns out I had my sorting configuration messed up.