Any of you guys/gals been or ever get attempts at exploiting openwebmail?

Just recently, I've noticed a rise in attempts, even though we don't use openwebmail.

Through our audit_log, I see this:

POST /cgi-bin/openwebmail/userstat.pl HTTP/1.1

It's promptly denied of course, just a bit annoying I guess. Wondering if any other people are getting it also.