Starting earlier today our workstations are not able to send/receive email through our Zoho mail accounts.

Outlook gives us an error stating "Cannot connect to outgoing mail server".

No other network issues appear to be occurring for us and it was working earlier until about 3 hours ago.  I have received reports from a friend also using your service in this area that they also are having connection problems. 

Are there any known network issues happening to your mail servers?