February 11th : 8:00 AM

Due to the prolonged Zix Data Center outage yesterday; s/mime key lookups are intermittently failing.

EntrustedMail engineers are seeing a small number of encrypted messages queue up because the key lookup to the Zix Key Servers is failing. 
Zix has advised that although thier systems are functional, they are still processing a large backlog of messages and expect the key lookup issue to resolve itself over time. 
We will continue to monitor this issue. We understand the importance of promptly delivered email and we sincerely apologize for the inconvenience.