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: 192.168.0.100, hostname: ftp.mydomain.org). Would this be a redef of ‘interesting_hostnames’ to something like:

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

Thanks!
-David Vasil