diff --git a/install/dist/lib/fedora.lib.php b/install/dist/lib/fedora.lib.php
index e01a739d636813c2d9dc4aa3783fa9b2e7194d91..5e28b8f3a7148a341dcefa954d098acc00d5c784 100644
--- a/install/dist/lib/fedora.lib.php
+++ b/install/dist/lib/fedora.lib.php
@@ -114,7 +114,7 @@ class installer_dist extends installer_base {
 
 	function configure_postfix($options = '')
 	{
-		global $conf;
+		global $conf,$autoinstall;
 		$cf = $conf['postfix'];
 		$config_dir = $cf['config_dir'];
 
diff --git a/install/dist/lib/gentoo.lib.php b/install/dist/lib/gentoo.lib.php
index fb6b13853a2f015eee96e45461b79a178effb602..72b34dcf3d08114974b46e4ead38a9441ef57c90 100644
--- a/install/dist/lib/gentoo.lib.php
+++ b/install/dist/lib/gentoo.lib.php
@@ -49,7 +49,7 @@ class installer extends installer_base
 
 	public function configure_postfix($options = '')
 	{
-		global $conf;
+		global $conf,$autoinstall;
 
 		$cf = $conf['postfix'];
 		$config_dir = $cf['config_dir'];
@@ -126,6 +126,7 @@ class installer extends installer_base
 				$command = 'cd '.$config_dir.'; '
 					.'openssl req -new -outform PEM -out smtpd.cert -newkey rsa:4096 -nodes -keyout smtpd.key -keyform PEM -days 3650 -x509';
 			}
+			exec($command);
 
 			$command = 'chmod o= '.$config_dir.'/smtpd.key';
 			caselog($command.' &> /dev/null', __FILE__, __LINE__, 'EXECUTED: '.$command, 'Failed to execute the command '.$command);
diff --git a/install/dist/lib/opensuse.lib.php b/install/dist/lib/opensuse.lib.php
index c76833169a4f8f60c37e3282264134663c71e784..c00903ee4a387452fbb90c4a6d49822dd9729cf7 100644
--- a/install/dist/lib/opensuse.lib.php
+++ b/install/dist/lib/opensuse.lib.php
@@ -130,7 +130,7 @@ class installer_dist extends installer_base {
 
 	function configure_postfix($options = '')
 	{
-		global $conf;
+		global $conf,$autoinstall;
 		$cf = $conf['postfix'];
 		$config_dir = $cf['config_dir'];
 
@@ -264,6 +264,7 @@ class installer_dist extends installer_base {
 				$command = 'cd '.$config_dir.'; '
 					.'openssl req -new -outform PEM -out smtpd.cert -newkey rsa:4096 -nodes -keyout smtpd.key -keyform PEM -days 3650 -x509';
 			}
+			exec($command);
 
 			$command = 'chmod o= '.$config_dir.'/smtpd.key';
 			caselog($command.' &> /dev/null', __FILE__, __LINE__, 'EXECUTED: '.$command, 'Failed to execute the command '.$command);