I am having problems getting SMTP relay to send mail to Outlook 365. I have setup the relay as described in http://support.microsoft.com/kb/2600912. However, when I test the relay using the procedure in the KB, the message goes into the SMTP queue and gets stuck.
The only message I get back is:
Unable to deliver message to the following recipients, due to being unable to connect successfully to the destination mail server.
I cannot figure out why the Office365 mail server is not accepting the email. The username for connecting to Office365 is valid. Do I have to enable something on Office 365 to allow mail to be relayed to it?
John