Make sure Outlook is closed

Open Control Panel: Right-click on the Start button (Windows logo button at the bottom-left corner of the desktop) and then click Control Panel

Change View by: to Large icons (at the top-right corner of the window)

Click Mail

Click Email Accounts…

Select your email account and click Repair…

Select Manually configure server settings or additional server types

Click Next

Click More Settings…

Click Connection

Click Exchange Proxy Settings…

Under Connection Settings change the first field to mail.picnictime.com and uncheck the box labeled Only connect to proxy servers that have this principal name in their certificate

Click OK

Click OK

Click Next >