Validation Error: SMTP Error: Could not connect to SMTP host.

[Muneef]

When I try to connect with office365 SMTP its getting error message 

Validation Error: SMTP Error: Could not connect to SMTP host.

as per the guide line i have step. Setting up Office365 as your Mail Service Provider | System Settings | Guides & Tutorials (whmcs.com)

 

Please help me to resolve 

[alessice]

Hi,

Microsoft is stopping to provide basic-auth with POP, IMAP and SMTP, customers must use OAUTH, could be this your problem? Or simply your server is deny any outbound connections with remote SMTP?

If you have SSH access to your server try with "telnet smtp.office365.com 587" and look for a reply/open port.

[Muneef]

up to know i have used remotelly but now i need to use office365.