4720
I am trying to post and am getting the "441 Posting Failed ("From" Header not in Internet Syntax.)" error.
This error means that you are not using a properly-formatted email address when you are posting. You do not have to use your real email address. In fact, using your real email address is discouraged because using your real email address in a post makes it easy for it to be added to a spam list. You can disguise your real address if you'd like people to contact you. For example, "[email protected]" could become "[email protected]".