Debconf has already filled in my username, so it's not completely
default. Also, the comments on top of the file were updated to reflect
the current exim configuration.
--- /dev/null
+# /etc/aliases
+#
+# The aliases in this file work for any "host" domains (such as
+# login.drsnuggles.stderr.nl), but not virtual domains (such as stderr.nl).
+# This means that the postmaster address for every virtual domain must be
+# configured separately!
+
+mailer-daemon: postmaster
+postmaster: root
+nobody: root
+hostmaster: root
+usenet: root
+news: root
+webmaster: root
+www: root
+ftp: root
+abuse: root
+noc: root
+security: root
+root: matthijs