In article <Pine.GSO.3.95.1000324045945.29571A-100000@electron.aa.ans.net>,
James P. Schmidt <jps@ans.net> wrote:
> Another newbie question (I promise my questions will get harder the more I
> learn :) ):
> 
> I'm running NetBSD 1.4 and pine 4.21, and got the following message when
> attempting to send a message:
> 
> Mar 23 21:46:35 zaren sendmail[8720]: NOQUEUE: SYSERR(root): hash map
> "Alias0": unsafe map file /etc/aliases: No such file or directory
> 
> /etc/aliases *is* a valid file; what is "Alias0", and / or where would I
> look for more info on how to configure my box to send / receive mail?

check that /, /etc, and /etc/aliases are not writable by group and others.

christos