How can I allow other applications to send mail through Exchange Server 2007?
Posted on 2009-02-24
I have a couple different scenarios, but am trying to achieve the same result: Sending mail through Exchange Server
Our phone system is a 3Com NBX V3000 VoIP solution. Within the system, there is the ability to do Offsite Notification via email. I have configured all options correctly and actually had it working at one point, but it has since stopped. The only option within the software to be configured for the mail server is "SMTP Domain Name". This issue may or may not be related to Exchange...I have not yet determined that yet. However, it may coincide with the following issue.
My other issue is with an online backup solution which we offer. This backup software has the ability to send emails to clients upon completion of a backup. Within this software, the items which can be filled in for mail are an email account, username, password, and mail server.
I can only get the backup software emails working if the email is sent to a user that also resides on our Exchange server. The software will not send to an external address. The Exchange log reports the following error when trying to send to an address that is not native to Exchange server. All emails work just fine when sending to a user on the same Exchange Server.
550 5.7.1 Unable to relay
250 2.0.0 Resetting
After some research and looking into the logs, I believe the issue lies within the Receive Connector. However, I am a bit unsure why I can send to other Exchange users, but not send outside. The online backup account is no different than any other user account setup within Exchange. In fact, I have actually plugged the onlinebackup account into Outlook and it could send/receive to outside users just fine.
Any ideas? Am I missing something here?