Any user sending out of the BlueTie SMTP service, must use a valid email address/alias. The following error will be received if the proper authentication is not used:
Error: 553 <tester@yahoo.com>: Sender address rejected: not owned by user tester@bluetie.com
A valid address is defined as an address or alias that is found in the BlueTie system. Any address that is used to send mail from a mail client (such as Outlook) must also be found on the username that is using SMTP authentication. This can be verified in the user aliases section which is accessible via the Enterprise Manager.