I have successfully created /etc/courier/userdb and used makeuserdb to make /etc/courier/userdb.dat and other files.
I have changed authdaemonrc to include authuserdb as well as authpam.
Yet mail sent to users in the userdb get 550 User unknown.
However, I can log in using IMAP as users in userdb and I can send mail from users in userdb (I use SMTP auth so there is loggin in going on).
So why am I getting the 550?
Because the mail domain is not installed in either locals, or the hosteddomains file, depending on your userdb setup.
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