Mar 14, 15:39 CDT
Identified – Microsoft has started to defer email inbound to @zixcorp.com. We are currently working with our engineers and Microsoft to resolve the issue.
We do apologize for any inconvenience. If your issue is an emergency you can contact us at 888.576.4949 or if you are wishing to just email in a ticket you can use support@appriver.com.
Thank you