Your Email server rejected your login

Hi Guys, I am basic user for Cpanel. I have strange problem . I am using Outlook 2013 - 2016 . Last 4 days inside 2 times i have a error messages. I uploaded pictures . I checked my ip address no where in black list. I cant connect server and we cant take emails from my ip address. When i am using web mail i can login and i can see my emails from same ip address. But outlook 2013-2016 asking all time password. I reseted password try again with outlook it is not working. But different ip address connect my email with Outlook. Same settings - same configuration. I think my company ip ban in cpanel setting. How can i solve this problem ? I have been using Microsoft Outlook from last one year, but suddenly it starts showing the error message on the screen "Sending and Receiving reported error 0x800CCC92: Your Email server rejected your login. Verify username and password in account properties".