t looks like we’ve gotten on a blacklist for spam. We are working on stopping the spam going through our servers and getting removed from the blacklist. In the meantime, you may have issues sending to some recipients whose ISPs are using SPAMHAUS as a blacklist. We will be posting updates as things change.
Update: We have delisted our mail server, but have not yet found the source of the bot causing the issue. We *may* get re-listed as a result. In the meantime, email should flow normally as soon as the blacklist servers with recipient ISP’s update.
Updaete 2/26/2013: It looks like we are staying off the blacklist. Email should flow fine, but if you are having any issues, please contact us at email@example.com or 256-547-6817.