I received an error message when trying to post a message to my group's website
This article describes error messages when trying to post message to group website or unable to post to group website.
If posts include special characters, in a group post, it can sometimes trigger an error.
You may receive an error message when trying to post messages to your Yahoo! Groups via the group's website. Typically this only happens when a message includes special characters, such as a dollar sign or a non-English character. Our engineers are aware of this situation and we are currently investigating it. We apologize for any inconvenience that this issue may cause.
As a workaround, if your message contains any special characters, please try removing them and posting your message again.