diff --git a/assets/install.sh b/assets/install.sh
index 0b2aaff..9e0f097 100755
--- a/assets/install.sh
+++ b/assets/install.sh
@@ -51,6 +51,18 @@ while IFS=':' read -r _user _pwd; do
 done < /tmp/passwd
 chown postfix.sasl /etc/sasldb2
 
+############
+# Enable Transport map
+############
+echo $transport_map | tr , \\n > /tmp/transport_map
+while IFS=':' read -r _domain _cmd _relay; do
+cat >> /etc/transport_map <<EOF
+$_domain $_cmd:$_relay
+EOF
+done < /tmp/transport_map
+postmap /etc//transport_map
+postconf -e transport_maps=hash:/etc/transport_map
+
 ############
 # Enable TLS
 ############
@@ -127,4 +139,4 @@ cat >> /etc/opendkim/SigningTable <<EOF
 *@$maildomain mail._domainkey.$maildomain
 EOF
 chown opendkim:opendkim $(find /etc/opendkim/domainkeys -iname *.private)
-chmod 400 $(find /etc/opendkim/domainkeys -iname *.private)
\ No newline at end of file
+chmod 400 $(find /etc/opendkim/domainkeys -iname *.private)