Error on Installation

[Joleen Shook]

Installation fails

Installed on Ubuntu 20.04.5
deployed with downloadable installer
I'm running Apache, but chose no web mail
Using Postgres

Error Msg

Errors were encountered while processing:
dovecot-sieve
dovecot-lmtpd
dovecot-managesieved
E: Sub-process /usr/bin/dpkg returned an error code (1)

config file:

export STORAGE_BASE_DIR='/var/vmail'
export DISABLE_WEB_SERVER='YES'
export WEB_SERVER=''
export BACKEND_ORIG='PGSQL'
export BACKEND='PGSQL'
export VMAIL_DB_BIND_PASSWD='xx'
export VMAIL_DB_ADMIN_PASSWD='xx'
export MLMMJADMIN_API_AUTH_TOKEN='xx'
export NETDATA_DB_PASSWD='xx'
export PGSQL_ROOT_PASSWD=''
export FIRST_DOMAIN='mydomain.com'
export DOMAIN_ADMIN_PASSWD_PLAIN=''
export USE_IREDADMIN='YES'
export USE_FAIL2BAN='YES'
export AMAVISD_DB_PASSWD='xx'
export IREDADMIN_DB_PASSWD='*********************************'
export RCM_DB_PASSWD='xx'
export SOGO_DB_PASSWD='xx'
export SOGO_SIEVE_MASTER_PASSWD='xx'
export IREDAPD_DB_PASSWD='xx'
export FAIL2BAN_DB_PASSWD='xx'

[iRedMail]

WARNING do not leak passwords.

I'm running Apache, but chose no web mail
Using Postgres

iRedMail installer doesn't offer Apache, and iRedMail requires a fresh / clean server OS.

Errors were encountered while processing:
dovecot-sieve
dovecot-lmtpd
dovecot-managesieved
E: Sub-process /usr/bin/dpkg returned an error code (1)

Try to install these packages manually, after succeed, run iRedMail installer again.