OK, I'm sold; I'll use SMTP-AUTH instead of POP-before-SMTP. I can
authenticate from inside or outside the network, using SMTP-AUTH in either
PLAIN or LOGIN mode. CRAM-MD5 is apparently not implemented (yet).
I can only relay when I connect from inside the network. Attempting to
relay from outside the network gives me the error "553 sorry, that domain
isn't in my list of allowed rcpthosts."
I am not using a SQL db for the backend. Should I be seeing a file called
open-smtp? It doesn't exist.
How do I get this thing to allow me to relay from my dynamic IP address once
I've authenticated with SMTP-AUTH?