I just noticed that comments on my blog don't work if the commentator's email address is the same as the domain of my blog. Let's pretend that my domain is mydomain.com. Sometimes I want to reply to comments and my email is firstname.lastname@example.org, but when I submit a comment using that address, it just reloads the page and nothing happens. When I submit a comment using an email address on another server, it works fine.
I have comment moderation turned on, plus I am using Akismet and the Comment Timeout Plugin. Do you think those are the problems? Or is it a feature of WordPress?
Thanks in advance.