I would like to configure my SMTP server to relay mail for a few friends who dial up and are dynamically assigned IPs. I certainly don't want an open relay, but I don't know what other options I have with Debian.
A web search reveals several authenticating schemes -- some password protected, one particularly elegant one accepting outgoing mail from any IP from which the user has successfully checked POP3 mail in the last several hours -- but they seem to be for commercial servers. Neither Mail-Administrator-HOWTO nor Mail-HOWTO mention authentication. What Debian options are there? Kirk Hilliard
