No luck - same message.
root@workstation:~# gpg --keyserver http://pgpkeys.mit.edu --no-default-keyring --primary-keyring /etc/apt/trusted.gpg --recv-keys E6BA110F3C0BC307 gpg: requesting key 3C0BC307 from http server pgpkeys.mit.edu gpgkeys: no key data found for http://pgpkeys.mit.edu/ gpg: no valid OpenPGP data found. gpg: Total number processed: 0 gpg: keyserver communications error: key not found gpg: keyserver communications error: bad public key gpg: keyserver receive failed: bad public key