Shortly after starting my exit relay I start to get a spam of messages that look something like this:
Jun 20 17:09:48.269 [Warning] eventdns: All nameservers have failed
Jun 20 17:09:54.253 [Notice] eventdns: Nameserver 192.168.1.1:53 is back up
After hours of uptime, despite the program reporting itself to be "online", the relay does not appear as online in Tor Atlas or Tor Globe.
The server is behind a firewall/NAT but everything has been properly configured (appropriate port forwarding completed, firewall access allowed).
The relay runs upon a 64-bit Windows Server 2008 R2 with Tor 0.2.4.22