I'm having an issue with a webmaster of another external site who is unable to parse an RSS feed from one of our sites (top level domain). He's using the MagpieRSS parser on his site and on the page where the RSS feed should be positioned its coming back with an "Error 404, file not found".
I've tried both the friendlier "/feed" URL address as well as "/?feed=rss2"
However, I've validated the main feed and comment feed on feedvalidator.org and w3.validator.org and everything validates. The feeds display correctly in Firefox live bookmarks etc. I've dropped the feeds into Newsfire (Mac RSS Aggregator) as well as Bloglines. Everything displays fine. I've checked from two other servers by doing a wget. No problems.
I've gone round the houses with this one. He's insistent on it being our problem, but I can't see anything up from our end. No one else is reporting such issues either and I can't recreate his problem from our end.
I've given him some feedburner addresses to use instead but for reasons best known to himself, he's not even trying them.
To avoid any problems at the moment, I won't reveal the URL if you don't mind. I appreciate this might cause some issues (maybe), but I'm after general advice as to whether there are any known bugs or issues or anything I could check...
Currently running Wordpress 2.6, mysql (4.1.22-standard)