I'm trying to set up a receive connector that will allow a web based CRM to relay mail. So far, it works, but only if the user I use to login is in the group "Domain Admins" in active directory.
Here are the settings I have checked for the receive connector:
- Security - Authentication: Transport Layer Security, Basic Authentication
- Security - Permission Groups: Exchange Users, Anonymous Users
- Scoping - IP Addresses: Addresses of the CRM, and my IP address for testing purposes.
- Scoping - Network Adapter Bindings: All available IPv4, Port 25.
And here's the steps I'm going through to send an email:
telnet (server fqdn) 25 ehlo auth login (username in base 64) (password in base 64) "Authentication successful" mail from: (email address) "sender ok" rcpt to: (my email addres) "recipient ok" data subject: test test . "250 Mail queued for delivery." quit
And I never get the email, it doesn't show up in the queue, or in the SMTP logs. But if I add the user to the "Domain Admins" group in Active Directory Users and Computers, and repeat these steps, everything looks exactly the same, but I do receive the email. Currently, the test user is only a member of "Domain Users". Any ideas?