Are these used by sendmail or are they there for demonstration purposes? I'm running 8.11.3+8.12.0.Beta7-8, and it's doing some kooky stuff with respect to DNS resolution and mail delivery. It's swearing black and blue that a domain isn't resolving so it's queuing it, but I can resolve it by hand. Very confusing, and very annoying.
Even if you send a test message by connecting to port 25, and manually talking SMTP, after going RCPT TO: it goes "Recipient ok, (will queue)", so it categorically thinks the domain's uncontactable (or at least unresolveable). Just wondering if the switch files have anything to do with it. Andrew