The IP address of this site has been listed by the Composite Blocking List. The result of this is that you may not be able to receive emails from the site, such as you normally would if you had subscribed to comments. It appears that infected emails are coming from the address. It’s not a report of infection from browsing any site.
This site’s IP address is shared by multiple web sites, so the cause of the problem could be (and I think probably is) someone else sharing the IP address. Nevertheless, mail blocking works by IP address alone.
Update: I received the following reply from the hosting company:
We need several days to solve this issue.
I can understand that. Finding the infection, eliminating it, and preventing re-infection is a big deal. They will probably have to work with another account holder and have them change their password. While not an immediate solution, I like this kind of an answer. They understood the problem right away and didn’t make me jump through hoops to prove that it wasn’t my problem.
It appears that my IP address is no longer in the CBL.