I think /etc/aliases misses this line: mail: root (exim is running as mail uid) The others lines like named: root lp: root news: root nobody: root also recommended to add to /etc/aliases (check /etc/passwd on what else makes sense to add)
This was already fixed a few minutes ago. I copied over the sendmail aliases file, which is very lengthy. It should look exactly the same as the aliases file included in sendmail. Tim