When installing the Frontend I get this error:

root@recon:~# apt-get install zabbix-frontend-php
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following NEW packages will be installed
zabbix-frontend-php
0 to upgrade, 1 to newly install, 0 to remove and 1 not to upgrade.
Need to get 0 B/1,876 kB of archives.
After this operation, 14.4 MB of additional disk space will be used.
Selecting previously unselected package zabbix-frontend-php.
(Reading database ... 326310 files and directories currently installed.)
Preparing to unpack .../zabbix-frontend-php_1%3a3.2.9-1+xenial_all.deb ...
Unpacking zabbix-frontend-php (1:3.2.9-1+xenial) ...
Setting up zabbix-frontend-php (1:3.2.9-1+xenial) ...
/var/lib/dpkg/info/zabbix-frontend-php.postinst: 11: /var/lib/dpkg/info/zabbix-frontend-php.postinst: Syntax error: "then" unexpected (expecting "done")
dpkg: error processing package zabbix-frontend-php (--configure):
subprocess installed post-installation script returned error exit status 2
Errors were encountered while processing:
zabbix-frontend-php
E: Sub-process /usr/bin/dpkg returned an error code (1)

The problem is non Linux characters in /var/lib/dpkg/info/zabbix-frontend-php.postinst as follows:

root@recon:~# cat -A /var/lib/dpkg/info/zabbix-frontend-php.postinst
#!/bin/sh -e$
$
if [ "$1" = "configure" ]; then$
$
if [ -d /etc/zabbix/web ]; then$
chown www-data.root /etc/zabbix/web$
chmod 755 /etc/zabbix/web$
fi$
$
for file in /usr/share/fonts/truetype/dejavu/DejaVuSans.ttf /usr/share/fonts/truetype/ttf-dejavu/DejaVuSans.ttf; do$
M-bM-^{@M-^BM-bM-}@M-^BM-bM-@M-^BM-bM-@M-^B if [ -e $file ]; then$
update-alternatives --install /usr/share/zabbix/fonts/graphfont.ttf zabbix-frontend-font $file 10$
M-bM-^{@M-^BM-bM-}@M-^BM-bM-@M-^BM-bM-@M-^B break$
M-bM-^{@M-^BM-bM-}@M-^BM-bM-@M-^BM-bM-@M-^B fi$
done$
$
for file in /etc/alternatives/ttf-japanese-gothic.ttf /etc/alternatives/fonts-japanese-gothic.ttf; do$
if [ -e $file ]; then$
update-alternatives --install /usr/share/zabbix/fonts/graphfont.ttf zabbix-frontend-font $file 20$
break$
fi$
done$
$
if [ -d /etc/apache2/conf.d ] && [ ! -f /etc/apache2/conf.d/zabbix ] && [ ! -h /etc/apache2/conf.d/zabbix ]; then$
ln -s /etc/zabbix/apache.conf /etc/apache2/conf.d/zabbix$
elif [ -d /etc/apache2/conf-available ] && [ ! -f /etc/apache2/conf-available/zabbix.conf ] && [ ! -h /etc/apache2/conf-available/zabbix.conf ]; then$
ln -s /etc/zabbix/apache.conf /etc/apache2/conf-available/zabbix.conf$
/usr/sbin/a2enconf zabbix.conf$
fi$
$
fi$
$

1. dh_installdeb will replace this with shell code automatically$
2. generated by other debhelper scripts.$
   $
   $
   $
   exit 0$

If you remove the M-bM-^{@M-^BM-bM-}@M-^BM-bM-@M-^BM-bM-@M-^B it all works.