this is obsolete doc -- see http://doc.nethence.com/ instead

Setting up Sendmail on NetBSD 

Setting up Sendmail on FreeBSD 8: http://pbraun.nethence.com/unix/mail/sendmail.html 

Installing sendmail 

cd ~/

echo $PKG_PATH

pkg_add sendmail

mv /etc/mailer.conf /etc/mailer.conf.dist

cp /usr/pkg/share/examples/sendmail/mailer.conf /etc/mailer.conf

cp /usr/pkg/share/examples/rc.d/smmsp /etc/rc.d/smmsp

cp /usr/pkg/share/examples/rc.d/sendmail /etc/rc.d/sendmail

Note. No need to edit '/etc/mtree/special.local' as we copied mailer.conf instead of making a symlink. 

Configuring sendmail 

cd /etc/mail/

ln -s /usr/pkg/share/sendmail/cf

cd /etc/mail/cf/

ls -l netbsd-proto.mc

ls -l generic-bsd4.4.mc

vi sendmail.mc

include(`/usr/pkg/share/sendmail/m4/cf.m4')

OSTYPE(bsd4.4)dnl

DOMAIN(generic)dnl

MAILER(local)dnl

MAILER(smtp)dnl

vi Makefile

CFOWN=root

make install-cf CF=sendmail

Note. change 'bsd4.4' accordingly e.g. 'linux' on a linux system 

Note. DOMAIN generic points to /usr/pkg/share/sendmail/domain/generic.m4. 

Note. Please refer to the [global sendmail guide on this site](http://pbraun.nethence.com/unix/mail/sendmail.html) for further sendmail features. 

cat > /etc/mail/local-host-names <<EOF9

$HOST

${HOST%%\.}

EOF9

Ready to go 

vi /etc/rc.conf

postfix=NO

smmsp=YES

sendmail=YES

/etc/rc.d/postfix onestop

/etc/rc.d/smmsp start

/etc/rc.d/sendmail start

Additional notes 

Do not forget to edit aliases and run newaliases. 

vi /etc/mail/aliases

root:           email@example.net

operator:       root

newaliases

Note. the 'newaliases' command is equivalent to 'sendmail -bi' 

Troubleshooting 

To manually create the sendmail configuration, 

m4 sendmail.mc > /etc/mail/sendmail.cf

References 

Setting up a secure SMTP server with AUTH and TLS enabled in Sendmail 

https://wiki.netbsd.org/tutorials/services/sendmail_auth_tls/