search for: mailtestb

...rdomain.prv. Below is what I am seeing, followed by my configs. Also, we had to open ports 88, 139 and 389 (I believe those are the correct ports, though the networking guys opened them) from the email/winbind server to the child domain, at the firewall. Any help would be very much appreciated! mailtestbed:~# wbinfo --all-domains BUILTIN MAILTESTBED RDOMAINPRV KID mailtestbed:~# wbinfo -u | grep testuser KID\testuser mailtestbed:~# wbinfo -a KID\\testuser%password plaintext password authentication succeeded challenge/response password authentication succeeded Here is where it's falling apart...