==== Required information ====
- iRedMail version (check /etc/iredmail-release):
- Linux/BSD distribution name and version:
- Store mail accounts in which backend (LDAP/MySQL/PGSQL):
- Web server (Apache or Nginx):
- Manage mail accounts with iRedAdmin-Pro?
- Related log if you're reporting an issue:
======== Required information ====
- iRedMail version (check /etc/iredmail-release): 0.9.4
- Linux/BSD distribution name and version: Debian 6
- Store mail accounts in which backend (LDAP/MySQL/PGSQL): MySQL
- Web server (Apache or Nginx): Apache
- Manage mail accounts with iRedAdmin-Pro? yes
- Related log if you're reporting an issue:
====

At upgrading iRedAPD to 1.8 I got the following output:

* Checking dependent Python modules:
  + [required] python-sqlalchemy
  + [required] dnspython
Install package: python-dnspython
Reading package lists... Done
Building dependency tree
Reading state information... Done
E: Unable to locate package python-dnspython

is the python-dnspython important? Do I have to install it manually?