OK after a pretty rocky week things should largely be working again on the site. Notably comments should be working, and my server should be pinging all the appropriate sites again.
Comments weren’t working because I had security cranked up on some directories which made it hard for anonymous users to force archive page regeneration when they posted a comment. I relaxed some settings and this should work now. I am not totally happy with the relaxed settings but decided I needed comments and trackback listings to work right. I may make more modifications here in the future.