John and Bob,
Thanks for the suggestions.
I have reviewed the help section for bouncing. I am unable to find any information that addresses being bounced due to being blacklisted. The bouncing discussed is for e-mail that can not be delivered to the member.
I have contacted my ISP. They don't see anything wrong with the e-mail address that I am using. It has a very low volume of messages. They say there is nothing they can do and suggested that I contact groups.io for assistance.
I have searched the groups.io site and can not find any way to rectify this type of bounce or a way to contact groups.io. Could one of this group's moderators give me some additional guidance?
Will changing my e-mail address rectify the problem?
Craig
Craig Goodyear