In the SuSE 9.3 tutorial (
http://www.howtoforge.com/perfect_setup_suse_9.3 ), you should have replaced server1.example.com with mail.englandshirt.com, for example on page 4:
Code:
echo mail.englandshirt.com > /etc/hostname
/bin/hostname -F /etc/hostname
and page 5:
Code:
postconf -e 'mydomain = englandshirt.com'
postconf -e 'myhostname = mail.$mydomain'
But you can still do this now (restart Postfix afterwards).