see: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=905726

debian/control

@@ -12,7 +12,7 @@ Homepage: http://postfixadmin.sourceforge.net
 Package: postfixadmin
 Architecture: all
 Depends: debconf (>= 0.5), dbconfig-common, wwwconfig-common, apache2 | lighttpd | httpd, libapache2-mod-php | php-cgi | php-fpm | php, php-mysql | php-mysqlnd | php-pgsql | php-pgsql | php-sqlite3, php-mbstring, default-mysql-client | mysql-client | postgresql-client | mariadb-client
-Recommends: postfix-mysql | postfix-pgsql, virtual-mysql-server | postgresql | sqlite (>= 3.12.0) | mariadb-server, zendframework, php-imap, dovecot-core | courier-authlib-mysql | courier-authlib-postgresql, php-cli
+Recommends: postfix-mysql | postfix-pgsql, virtual-mysql-server | postgresql | sqlite3 | mariadb-server, zendframework, php-imap, dovecot-core | courier-authlib-mysql | courier-authlib-postgresql, php-cli
 Description: Virtual mail hosting interface for Postfix
  Postfixadmin is a web interface to manage virtual users and domains
  for a Postfix mail transport agent. It supports Virtual mailboxes,