I just realized that comments were not working on this blog, if you had specified an email address. LifeType has a feature that validates email address specified in comments. When an email address is specified, it looks up the mx record for the domain, and attempts to connect to that server on port 25, and check if the server will accept mail for that email address.
The problem was that GoDaddy doesn't support outgoing connections on port 25. This is not a bug deal for me, as I have all of my outgoing mail going through one of my other servers on a different port. I had to change the LifeType configurations so the comments would work again.