There's a mention in the .mc file (which is where you're supposed to make your changes, BTW (I learned the hard way!). The line mentions a mailer daemon at 127.0.0.1. Make sure there's a similar line for the IP address that 'faces the sea' 'cause that's where you'll get your mail. It's a security thing.
As another option, you can also simply comment out that 127.0.0.1 line; failing to find that line, sendmail will listen on all IP addresses on the system.
-- Rodolfo J. Paiz rpaiz@xxxxxxxxxxxxxx
