Added a mechanism which prepares the configuration files for possible use,
substituting values for the parameters now employed in the files.
1# Local delivery to Cyrus: 2#local@$MAIL_DOMAIN lmtp:unix:/var/run/cyrus/socket/lmtp 3# Local delivery to Dovecot: 4#local@$MAIL_DOMAIN lmtp:unix:/var/run/dovecot/lmtp