While trying to install sendmail-8.14.1 on Debian Etch according to the instructions on this web page http://www.howtoforge.com/howto_sendmail_smtp_auth_tls in the part named: "Finally we have to create some files:" I ran into a problem when it came to newaliases: hash map "Alias0": unsafe map file /etc/mail/aliases.db: Permission denied WARNING: cannot open alias database /etc/mail/aliases Cannot create database for alias file /etc/mail/aliases I went on with the installation anyway, but what to do?