deliverResultsToDestination failed

Our schedule to send email to internal employees works ok using the existing email setting under AdaptiveJobServer. It uses the following:

Domain: Domain
Host: webmail.domain.com
Port: 25
Authentication: None
Username: administration
Password: xxxxxxxxxxx

We can’t send any external email. We get the error:
deliverResultsToDestination failed.
I don’t see anything in the log.

Now our Adminstrator said that office365 is being used and the setting will need to be changed.
He has tried different setting:
Domain: empty
Host: smtp.office365.com
port: 587
Authentication: Plain

Also enabled SSL.

But change the setting break even the internal email as well.

What exactly and in what format do we need the setting to make the external and internal email work.
Is there anything that can be out on the BO server out the CMC to troubleshoot it.

We use office365. Our setting in the adaptive job server are:
Domain: Ourdomain.com
Host: SMTP
port: 25
Authentication: None

Thanks. Does your work for both internal and external emails. We have it setup same as yours but BO does not send the external email.
Our admin is trying all sorts of office 365 domain like:
smtp.office365.com,
port 587
etc.

Yes ours works for both internal and external emails.

Can I get any input as to why the external email will not work. I am assuming it is not the internal BO issue.

In my experience this is usually a firewall issue. You need to make sure that the external site you are sending to is whitelisted/not blacklisted.