I get a copy of the message I sent and a not allowed message. Like I said, before the cpanel upgrade it worked perfectly and I've made no changes in the admin panel or anything like that.
I was just about to ask about that too. I get the same message along with the sent message. I'm on server 23.
My list has been set up for a few months and has been working fine until recently. It got fixed up for me and now I'm getting that "not allowed" message.
I use FP 2002. I don't use it to upload, nor do I use the templates. It is an easy way to make a page and edit the html. I use Smart FTP to do my uploading.