406 Not Acceptable Home › Forums › Newsletter Plugin Support › 406 Not Acceptable This topic has 2 replies, 2 voices, and was last updated 1 year, 10 months ago by Stefano. Viewing 3 posts - 1 through 3 (of 3 total) Author Posts December 3, 2022 at 10:45 pm #291992 ezekielgroveParticipant tried sending newsletter but got this error message “406 Not Acceptable” January 25, 2023 at 9:21 pm #294284 StefanoKeymaster This is a block by your provider caused by a false positive of mod_security. February 3, 2023 at 7:20 pm #294770 StefanoKeymaster With release 7.6.0 we addressed that problem and tried to “bypass” that false positive of mod_security. Author Posts Check out our premium plans with priority support. Viewing 3 posts - 1 through 3 (of 3 total) You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In