Filtering out hosts from notices

I’m sure this has been documented somewhere, but I have been unable to find it thus far. How do you define suppression criteria for individual notices? For example, SSH::Interesting_Hostname_Login is triggering for me quite a bit on an ftp server that also provides sftp access; I’d like to suppress all notices to this system (e.g. ip:, hostname: Would this be a redef of ‘interesting_hostnames’ to something like:

(/^d?ns[0-9]./ |
./ |
/^mail[0-9]./ |
./ |
/^imap[0-9]./ |
./ |
/^ftp[0-9]*./) & !( &redef;

-David Vasil