When using grml-debootstrap to deploy wheezy on a grml 2014.03 system, the mail name in 
/etc/mailname is always set to "grml.mycurrentdomain.tld", no matter what hostname is 
supplied to grml-debootstrap via the "--host" command line option.

Steps to reproduce on a grml 2014.03 system:

root@grml ~ # echo ';' | sfdisk /dev/vda
root@grml ~ # grml-debootstrap --arch amd64 --filesystem ext4 \
    --grub /dev/sda --hostname foobar --release wheezy \
    --password secret --target /dev/sda1
# [...]
root@grml ~ # hostname
grml
root@grml ~ # mount /dev/vda1 /mnt
root@grml ~ # cat /mnt/etc/mailname
grml.mycurrentdomain.tld

What I would expect to see:

root@grml ~ # cat /mnt/etc/mailname
foobar.mycurrentdomain.tld