Originally Posted by till
Then you might try to reinstall postfix by adding "--reinstall" to the apt-get statement, as it can not work when all its config files are missing.
Use the update.php script instead of the instll script and choose to reconfigure services during update.
I reinstalled the postfix items using --reinstall option in apt, and noticed this message when it was completed:
"Postfix is not set up, start with
cp /usr/share/postfix/main.cf.debian /etc/postfix/main.cf <snip>"
Post fix is running, will do the update install of ISPconfig now, I'll let you know - thanks for the hint