I receive the "The webmaster has forbidden your access to this site" message when the Acymailing subscription was sent. Would you please tgo advise how to fix it? It allows to subscribe if I put the IP to the white list.
Enable the 'Easy config'feature from main panel of Securitycheck Pro and also check that the xss filter (waf Configuration -> filter exceptions) doesn't filter all html tags. This will solve your issue.