My email was working fine till this morning when I found a message saying I have a New Sign-in to my Zoho account (Which was not mine) I change the password of the accounts involved BUT when I'm using my computer or Iphone over my WiFi I received the message of: 

THE MAIL SERVER IMAP.ZOHO.COM IS NOT RESPONDING...VERIFY THAT YOU HAVE ENTERED THE CORRECT ACCOUNT INFO IN MAIL SETTINGS.

But if I use the data of my phone all works fine, except on WiFi I receive this message on my Laptop and Iphone.