From: Eric Wong <normalperson@...>
Date: 2013-01-25T04:45:41+09:00
Subject: Re: How do I unsubscribe from the mailing list?

"Eduardo B." <lists@ruby-forum.com> wrote:
> I have sent "unsubscribe" in the body to ruby-talk-ctl@ruby-lang.org
> many times but it keeps sending back:
> 
> your mail has no effective commands
> please read the following help and send requests to
> <ruby-talk-ctl@ruby-lang.org>

Can you make sure your email client is sending a text/plain message
_without_ base64 encoding?