[otrs] Nagios integration

Howdy all. I've been looking through the list archives and can't find a solution. Does anyone have any recommendations for otrs integration with nagios? I've seen perl scripts posted about using an ssh connection to call genericappication.pl, but it seems so much cleaner to use postmaster filters if possible. What is required is that when nagios send's an email to otrs, it opens a new ticket as always. If the problem persists and nagios sends a reminder email, a new ticket is not created but the new communication is appended to the existing ticket as a note. Once the problem is solved, nagios sends off a recovery email and that ticket is then closed. Any ideas? Thanks, Christian McHugh