Diskless build problem

[Bernt Hansson]

Hello list

Trying to build a server for diskless clients but it fails with this

cd /usr/src/etc/sendmail; make distribution
install -o root -g wheel -m 644  /usr/src/etc/sendmail/freebsd.mc 
freebsd.cf /usr/home/bernt/disk2/diskless/etc/mail
install: freebsd.cf: No such file or directory
*** Error code 71

Stop in /usr/src/etc/sendmail.
*** Error code 1

Stop in /usr/src/etc.

It does not matter if freebsd.cf is in the directory 
/usr/src/etc/sendmail/ or not, install never finds the file.
I'm following the freebsd handbook.