Postfix: phantom hostname.

[Ken D'Ambrosio]

Okay, this is pissing me off.

I've got a machine, currently "reddwarf", that used to be "nebula".  
I've -- obviously -- changed its name.  "nebula" isn't mentioned in 
/etc/hosts, and the IP resolves (both reverse and forward) to reddwarf.  
/etc/hostname is reddwarf.  The "live" hostname (eg. the output of 
"hostname") is reddwarf.  /etc/mailname is reddwarf.  A "strace -f 
postfix" doesn't show the word "nebula" anywhere.  "nebula" isn't 
mentioned in any of the postfix config files; reddwarf is.  I've made 
sure that the postfix processes have restarted.  Hell: I've dpkg 
--purge'd postfix (after installing exim), and then installed postfix 
again from scratch.

THEN WHY THE FLOCK, WHEN I TELNET TO PORT 25, DOES IT THINK IT'S NEBULA?!

Suggestions as to why this might be would go a long way toward saving 
the small amount of sanity I have left.

Thanks,

-Ken