The server could not be connected message for IMAP

The server could not be connected message for IMAP

Hi, getting this error message for all my mail accounts I access through the Zoho web client:

The Server could not be connected. Check whether the Server is available to connect in the given name and port number.


Error occurs for both email accounts I access via IMAP but my zoho email account works fine. Something gone wrong in Zoho perhaps?