Following the perfect setup (bind & dovecot) at the end of installation I saw that message
Stopping amavisd: amavisd-new.
head: cannot open `/etc/mailname' for reading: No such file or directory
Starting amavisd: amavisd-new.
Digging a bit on this site I found that the Multiserver setup on debian had this line
echo mail.example.tld > /etc/hostname
echo mail.example.tld > /etc/mailname
Is it mandatory. Do I have to reinstall ISPConfig after addind this line.