Was just alerted that our outbound email queues have a few messages to cableone.net queued up, because there's no MX record (even Google and OpenDNS don't have an MX record cached). DNSInspect (http://www.dnsinspect.com/cableone.net/10059114) is showing that their two nameservers aren't resolving their A record. DownDetector is reporting issues: http://downdetector.com/status/cable-one There's also few posts on Twitter, too: https://twitter.com/lucky_boym/status/845441576973295616 https://twitter.com/AnonySerb/status/845441954599092224 And just now posted, from CableONE: https://twitter.com/cableONE/status/845460682560688128 Frank