Went to look at a couple of things on the forum and xtuple.com this morning, and I got redirected to a page letting me know my IP was greylisted. It allowed me to request whitelisting, and also took me to some info about why my IP was greylisted.
So I requested, whitelisting, but the form took me right back to first page once I submitted it. So I have no idea whether it went the request posted or not.
Looks like someone may have sent 2 spam messages 2 months ago from somewhere within a large block of dynamic IPs in Puerto Rico.