I find it odd that RR would suddenly start blocking them. This only started when email notifications were cut off. Up until then, I was getting all email notifications. I might change my email to my huantednmansion.com email address and see if I get any. I still think it is a problem from y'alls end.
I never had problems up until the other day when all notifications stopped. I have gone in and updated my settings, my email is correct, and my ISP is a local one.
i get mine at yahoo no problem for most part. I'd suggest if your isp has a spam blocker/hold box you check there. I get somethings through no problem others I have to go ok.