For this very reason, the KVSTool.com domain itself has always been set-up fully autonomously from the web server and has 5 layers of DNS servers attached to it. As a result, the domain itself was not affected by today's outage, which, in turn, enabled uninterrupted e-mail communication.
If it wasn't for a series of inaccurate ETAs from our Web Hosting provider, we would have been able to switch the DNS records to point to an alternative server much earlier.
Nevertheless, once further redundancy procedures have been implemented, the new backup system will likely also use a separate domain for additional resiliency in situations like these.
On a more positive note, now that their network upgrade has [finally] been completed, the KVS Tool website is faster than ever.
Just so you know, DNS queries for kvstool.com were also timing out for me from a number of different geographic locations. It appears you also had DNS issues at the same time.