ZixCorp is currently experiencing a temporary issue with ZixCorp's hosted mail systems. During this time your secure email users may have intermittent issues while attempting to send encrypted emails or email may be delayed.
Our engineers are currently working on the problem and we expect to have a resolution shortly. We apologize for any inconvenience this may cause and we will provide an update shortly.
This information is also available on our status page https://status.zixcorp.com/