Zoho mail all of a sudden not working - own domain

Zoho mail all of a sudden not working - own domain

I have a mail account with Zoho that just stopped working....it wont connect in Outlook for Mac incoming or outgoing and nothing on my end has changed other than a wifi network change.  I have two other accounts in Outlook for Mac and they are working just fine (one is exchange and one is gmail).  What do i need to check out?

What's strange is that the account is working fine on my iPhone/iPad just not in Outlook.  I deleted the account and set it up again.