VMM/common: human_size() size argument can be also a string.
Because the default value of misc.quota_bytes is '0', a string in order to
accept also settings like '500M'.
# All parameters are described in pgsql_table(5) / PGSQL PARAMETERS
#
# The hosts that Postfix will try to connect to and query from.
hosts = localhost
# The user name and password to log into the pgsql server.
user = postfix
password = some_password
# The database name on the servers.
dbname = mailsys
# The SQL query template used to search the database
query = SELECT destination FROM postfix_relocated WHERE address='%s'