Why are all the local users "unknown" when using sendmail under 4.1.2?

	There is a known problem with sendmail and frozen config
	files under 4.1.2.

	The fix is to remove /etc/sendmail.fc. Also, You could 
	try moving it to the end of /etc/rc.local.
	
	However, the best "fix" may be to install the new Berkeley 
	Sendmail it has a number of enhancements, performance
	improvements, and security enhancements.
	
	You can get Berkeley sendmail from ftp.cs.berkeley.edu(128.32.149.78).
	Get the following files: /ucb/sendmail/*8*6*9*
				 /ucb/4bsd/db.tar.Z
	Also, you will need bind 4.9 and it can be found on
	gatekeeper.dec.com(16.1.0.2) in the /pub/BSD/bind/4.9
	directory.

	Finally, if you do not want to build the Berkeley sendmail for
	yourself I will be willing to mail you a copy.

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