1 = Prerequisites = 2 3 Depending on the mail transport agent (MTA) chosen, the following packages are 4 required for this software to work on Debian systems: 5 6 Exim:: exim4-daemon-heavy 7 Postfix:: postfix postfix-ldap 8 9 The software itself requires the following packages: 10 11 Python:: python 12 pytz:: python-tz 13 14 If the [[../DatabaseStore|database store]] is used, the following packages are required: 15 16 PostgreSQL:: postgresql-9.4 (version may vary between releases) 17 psycopg2:: python-psycopg2 18 19 To provide localised messages: 20 21 gettext:: gettext 22 23 To update free/busy details periodically, the following software is 24 recommended: 25 26 Cron:: cron 27 28 The management Web interface requires the following packages: 29 30 Apache:: apache2 31 Babel:: python-babel 32 33 Although not necessarily within the scope of the deployment of this software, 34 the following mail storage solutions would be used to receive and hold 35 messages: 36 37 Cyrus:: cyrus-imapd 38 Dovecot:: dovecot-imapd dovecot-ldap dovecot-lmtpd 39 40 Some test programs and the configuration helper tool need additional programs 41 provided by other packages: 42 43 envsubst:: gettext-base
