Trying to post a wordpress comment on my site redirects to 127.0.0.1

If you are using All in One Security plugin for WordPress, then try to uncheck ‘Block Spambot Comment’ checkbox in Spam Prevention’ section Comment SPAM tab
Check this if you want to apply a firewall rule which will block comments originating from spambots. I fixed that issue like this. Seems that this feature not really working properly 🙂