diff --git a/install_roundcube.sh b/install_roundcube.sh
index 84e7233..5f487a2 100755
--- a/install_roundcube.sh
+++ b/install_roundcube.sh
@@ -1791,6 +1791,7 @@ cat <<EOF >>$WEBSITE_BASEDIR/roundcubemail-${ROUNDCUBE_VERSION}/config/config.in
 // with any configured cipher_method (see below).
 \$config['des_key'] = '$_des_key';
 
+
 // ----------------------------------
 // SYSTEM
 // ----------------------------------
@@ -1804,6 +1805,35 @@ cat <<EOF >>$WEBSITE_BASEDIR/roundcubemail-${ROUNDCUBE_VERSION}/config/config.in
 \$config['login_autocomplete'] = 1;
 
 
+// ----------------------------------
+// SMTP
+// ----------------------------------
+
+// SMTP server host (for sending mails).
+// Enter hostname with prefix tls:// to use STARTTLS, or use
+// prefix ssl:// to use the deprecated SSL over SMTP (aka SMTPS)
+// Supported replacement variables:
+// %h - user's IMAP hostname
+// %n - hostname (\$_SERVER['SERVER_NAME'])
+// %t - hostname without the first part
+// %d - domain (http hostname \$_SERVER['HTTP_HOST'] without the first part)
+// %z - IMAP domain (IMAP hostname without the first part)
+// For example %n = mail.domain.tld, %t = domain.tld
+\$config['smtp_server'] = 'localhost';
+
+// SMTP port (default is 25; use 587 for STARTTLS or 465 for the
+// deprecated SSL over SMTP (aka SMTPS))
+\$config['smtp_port'] = 25;
+
+// SMTP username (if required) if you use %u as the username Roundcube
+// will use the current username for login
+\$config['smtp_user'] = '';
+
+// SMTP password (if required) if you use %p as the password Roundcube
+// will use the current user's password for login
+\$config['smtp_pass'] = '';
+
+
 // ----------------------------------
 // IMAP (further settings)
 // ----------------------------------