[gentoo-user] tips on running a mail server in a cheap vps provider run but not-so-trusty admins?

[Caveman Al Toraboran]

hi.  context:

1. tinfoil hat is on.
2. i feel disrespected when someone does things to
   my stuff without getting my approval.
3. vps admin is not trusty and their sys admin may
   read my emails, and laugh at me!
4. whole thing is not worth much money.  so not
   welling to pay more than the price of a cheap
   vps.  moving to dedicated hardware for me is
   not worth it.  my goal is to make it annoying
   enough that cheap-vps's admins find it a bad
   idea for them to allocate their time to mingle
   with my stuff.

thoughts on how to maximally satisfy these
requirements?

rgrds,
cm.