An app for remote system admin via email?
I'm looking for an application to handle remote system administration of a linux box via email. The box will only connect to the internet intermittently to pull in mail, so remote admin via ssh or webmin isn't a satisfactory option. I need something that can read mail (presumably checking pgp / gpg signatures for authentication) and execute commands contained therein. I have googled but not found anything suitable. Anyone have any ideas?