You get what you pay for
funk.shacknet.nu is a domain hosted by dyndns.org, a free DNS provider. Unfortunately, they had some problems today:
Due to a problem with our secondary database last night, the accounts which owned approximately 2200 Dynamic DNS hosts were inadvertently deleted, even though their hosts still existed. Those hosts have now also been deleted. If your host has disappeared, you will need to re-create both your account and your host. This did not affect any accounts with Static DNS hosts or using any of our paid services. We apologize for this inconvenience, and will work to prevent this type of problem in the future.
That sucks because funk.shacknet.nu disappeared from the internet for a while. I don't know how long it was out or if any incoming email was lost during that time. I had to recreate my account and add the host. It would be nice to move to adullmoment.com, a domain I actually paid for, but I haven't gotten around to developing it, and it's always a pain to switch email addresses and websites after using them for a while. Hopefully the site will be back up as soon as the DNS propagates.