Simplified and corrected the __RDNS_DYNAMIC_IPADDR regex.
Simplified and corrected the __RDNS_DYNAMIC_IPADDR regex.

Closes bug 5564.  Reviewed by jmason.



git-svn-id: e9fe9b84e32fc5e57b7d09c40cd78b14ea28ed71@556911 13f79535-47bb-0310-9956-ffa450edef68

apache/spamassassin,apache/spamassassin,apache/spamassassin,apache/spamassassin,apache/spamassassin