New to ServiceDesk Plus (and Desktop Central).... 

I am having trouble configuring the mail connector and I hope someone can offer some advise...

SD Plus is receiving and sending email to and from my domain users and users who have an Exchange account, but it fails to send emails to a non domain\Exchange user.  The users are listed in the SD Plus as Requesters and can log in without problem.  

I am also using UpTime to monitor some servers and I am using the same email account to send alerts, and this has no problem sending alerts to a user who has a non Domain\Exchange account.  For example, it can send alerts through Exchange to my ATT Phone as an SMS alert.

Regards,