User-Agent: Mozilla/5.0 (Windows; U; Win 9x 4.90; en-US; rv:184.108.40.206) Gecko/20070725 Firefox/220.127.116.11 Build Identifier: Mozilla/5.0 (Windows; U; Win 9x 4.90; en-US; rv:18.104.22.168) Gecko/20070728 Thunderbird/22.214.171.124 Tb needs additional filtering options for NNTP accounts to deal with trolls and abusive x-posting. An easy way to 'Kill File' of 'Plonk' would also be a blessing. Reproducible: Always Steps to Reproduce: 1.Subscribe to groups on USENET with lots of troll or x-post traffic 2.Try to create a filter on posting host 3. Actual Results: Filter can not be created because it is not on list of options Expected Results: Be able to filter trolls and x-post This a basic feature of newsreaders designed for NNTP. Scoring would be a usefull expansion for future.