Hello
EDIT: this works but causes sendmail to pause for ~1 minute when it can't find its own FQDN; this slows boot (if sendmail is started at boot and not backgrounded) and would be un-workable on a busy mail server.
Here's how to configure sendmail to send mails when the computer is configured with a hostname but no domain name. It may be of use, for example, if you want to mail system exception reports and do not want to configure the computer as being part of a...
