Disabled gnu.org email address

My next step in reducing the spam traffic in my life is removing my @gnu.org email address. This is one that has been good for me for 13 years but has largely been useful only as a spam trap. In fairness to the FSF, their spam filters have gotten really quite good in the last 5 years or so, but there's zero signal on that account so I may as well squish it.

I've set my alias in /com/mailer/aliases to :fail: with a 551, but the multi-level relay on monty-python seem to not respect that. I've filed a ticket, so that anyone trying that will get a proper message to say where to follow-on to.

The efforts seems to be making a difference. At the beginning of December, I had just over 11 thousand messages in my last-30-days spam folder. Right now it's 8925.