Wordpress trouble sending trackbacks

I have Wordpress 1.5 installed and everything is working pretty smoothly. However, I’m having a problem with sending and receiving trackbacks and pingbacks. My RPC pings to sites such as pingomatic are working properly, but not anything else. I’ve search high and low for advice on this and have yet to find anything. Anyone have a similar problem here at Dreamhost and come up with some sort of solution?

Please redirect your request to the WordPress Support Forums and search there before posting.