If you cannot do that then you need to find out whether the offce365 package you got from godaddy offers you those rights. It sounds like to use the office365 smtp server you must have admin rights so you can make sure the 'Authenticated SMTP' is enabled as per previous info and link. ''I disabled it and installed Easy WP SMTP plugin works with the following setting:'' You just wouldn't be able to use them to send messages out of your hosting plan. ''You can, of course, use the SMTP services for Workspace Email or Office 365 for any messages you need to send out from the addresses you have set up in that environment. This includes trying to use the SMTP servers for Workspace Email or Office 365.'' You can not send through other servers via a hosted script. ''If you're trying to send email via a shared hosting plan (Web Hosting, cPanel, Plesk), you would only be able to do so via. ''However, depending on how you're trying to send, some services are restricted.'' If you need to specify an SMTP server, please use. ''our shared hosting plans (Managed WordPress, cPanel Hosting, Plesk Hosting, Web & Classic Hosting), you wouldn't be able to use an outside SMTP mail server, even Outlook. The term “external mail server,” relate to any mail server that is located outside GoDaddy network.'' ''When using a Shared Hosting plan, you cannot configure your hosted WordPress site to address an external SMTP mail server.

I disabled it and installed Easy WP SMTP plugin works with the following setting: You can, of course, use the SMTP services for Workspace Email or Office 365 for any messages you need to send out from the addresses you have set up in that environment. This includes trying to use the SMTP servers for Workspace Email or Office 365.

If you're trying to send email via a shared hosting plan (Web Hosting, cPanel, Plesk), you would only be able to do so via. However, depending on how you're trying to send, some services are restricted.

Our shared hosting plans (Managed WordPress, cPanel Hosting, Plesk Hosting, Web & Classic Hosting), you wouldn't be able to use an outside SMTP mail server, even Outlook. The term “external mail server,” relate to any mail server that is located outside GoDaddy network. When using a Shared Hosting plan, you cannot configure your hosted WordPress site to address an external SMTP mail server.

Mac mail outgoing server not working