A RSS-feed in Thunderbird paused a feed from my own personal website. I used the built-in RSS-feed validate tool. It pointed me to a specific text row in the article that had a character not allowed by xml. I removed that character and the RSS-feed started again. I did not investigate if a new article could restart the feed or if the feed would be dead until the character was deleted. It is scary if RSS-feeds stops working just because a single character error in the text. #rss #xml #thunderbird