Is email for CRM working?

Is email for CRM working?

We love and recommend Zoho apps.

Lately we have had issues with sending mail.

A ping for crm.zoho.com indicates the following:

Ping has started ...

PING crm.zoho.com (74.201.154.150): 56 data bytes

--- crm.zoho.com ping statistics ---
10 packets transmitted, 0 packets received, 100% packet loss

Any suggestions on resolving this would be appreciated.

Lynn Pendrigh