diff --git a/interface/web/dns/dns_dkim_edit.php b/interface/web/dns/dns_dkim_edit.php
index 1735473a04aefed768b991beb1a2569173d0a08d..a0bd4f8fc4372f4a6924f5133a94e01a2e3e44ef 100644
--- a/interface/web/dns/dns_dkim_edit.php
+++ b/interface/web/dns/dns_dkim_edit.php
@@ -58,11 +58,11 @@ class page_action extends tform_actions {
 
 			// Get the limits of the client
 			$client_group_id = $app->functions->intval($_SESSION["s"]["user"]["default_group"]);
-			$client = $app->db->queryOneRecord("SELECT limit_dns_record FROM sys_group, client WHERE sys_group.client_id = client.client_id and sys_group.groupid = $client_group_id");
+			$client = $app->db->queryOneRecord("SELECT limit_dns_record FROM sys_group, client WHERE sys_group.client_id = client.client_id and sys_group.groupid = ?", $client_group_id);
 
 			// Check if the user may add another record.
 			if($client["limit_dns_record"] >= 0) {
-				$tmp = $app->db->queryOneRecord("SELECT count(id) as number FROM dns_rr WHERE sys_groupid = $client_group_id");
+				$tmp = $app->db->queryOneRecord("SELECT count(id) as number FROM dns_rr WHERE sys_groupid = ?", $client_group_id);
 				if($tmp["number"] >= $client["limit_dns_record"]) {
 					$app->error($app->tform->wordbook["limit_dns_record_txt"]);
 				}
@@ -75,7 +75,7 @@ class page_action extends tform_actions {
 	function onSubmit() {
 		global $app, $conf;
 		// Get the parent soa record of the domain
-		$soa = $app->db->queryOneRecord("SELECT * FROM dns_soa WHERE id = '".$app->functions->intval($_POST["zone"])."' AND ".$app->tform->getAuthSQL('r'));
+		$soa = $app->db->queryOneRecord("SELECT * FROM dns_soa WHERE id = ? AND ".$app->tform->getAuthSQL('r'), $app->functions->intval($_POST["zone"]));
 		// Check if Domain belongs to user
 		if($soa["id"] != $_POST["zone"]) $app->tform->errorMessage .= $app->tform->wordbook["no_zone_perm"];
 
@@ -83,10 +83,10 @@ class page_action extends tform_actions {
 		if($_SESSION["s"]["user"]["typ"] != 'admin') { // if user is not admin
 			// Get the limits of the client
 			$client_group_id = $app->functions->intval($_SESSION["s"]["user"]["default_group"]);
-			$client = $app->db->queryOneRecord("SELECT limit_dns_record FROM sys_group, client WHERE sys_group.client_id = client.client_id and sys_group.groupid = $client_group_id");
+			$client = $app->db->queryOneRecord("SELECT limit_dns_record FROM sys_group, client WHERE sys_group.client_id = client.client_id and sys_group.groupid = ?", $client_group_id);
 			// Check if the user may add another record.
 			if($this->id == 0 && $client["limit_dns_record"] >= 0) {
-				$tmp = $app->db->queryOneRecord("SELECT count(id) as number FROM dns_rr WHERE sys_groupid = $client_group_id");
+				$tmp = $app->db->queryOneRecord("SELECT count(id) as number FROM dns_rr WHERE sys_groupid = ?", $client_group_id);
 				if($tmp["number"] >= $client["limit_dns_record"]) {
 					$app->error($app->tform->wordbook["limit_dns_record_txt"]);
 				}
@@ -101,12 +101,12 @@ class page_action extends tform_actions {
 		$this->dataRecord['name']='default._domainkey.'.$this->dataRecord['name'];
 
 		// Update the serial number  and timestamp of the RR record
-		$soa = $app->db->queryOneRecord("SELECT serial FROM dns_rr WHERE id = ".$this->id);
+		$soa = $app->db->queryOneRecord("SELECT serial FROM dns_rr WHERE id = ?", $this->id);
 		$this->dataRecord["serial"] = $app->validate_dns->increase_serial($soa["serial"]);
 		$this->dataRecord["stamp"] = date('Y-m-d H:i:s');
 
 		// check for duplicate entry
-		$check=$app->db->queryOneRecord("SELECT * FROM dns_rr WHERE zone = ".$this->dataRecord["zone"]." AND type = '".$this->dataRecord["type"]."' AND data ='".$this->dataRecord["data"]."' AND name = '".$this->dataRecord['name']."'");
+		$check=$app->db->queryOneRecord("SELECT * FROM dns_rr WHERE zone = ? AND type = ? AND data = ? AND name = ?", $this->dataRecord['zone'], $this->dataRecord['type'], $this->dataRecord['data'], $this->dataRecord['name']);
 		if ($check!='') $app->tform->errorMessage .= $app->tform->wordbook["record_exists_txt"];
 		if (empty($this->dataRecord['data'])) $app->tform->errorMessage .= $app->tform->wordbook["dkim_disabled_txt"];
 		parent::onSubmit();
@@ -116,7 +116,7 @@ class page_action extends tform_actions {
 		global $app, $conf;
 
 		//* Set the sys_groupid of the rr record to be the same then the sys_groupid of the soa record
-		$soa = $app->db->queryOneRecord("SELECT sys_groupid,serial FROM dns_soa WHERE id = '".$app->functions->intval($this->dataRecord["zone"])."' AND ".$app->tform->getAuthSQL('r'));
+		$soa = $app->db->queryOneRecord("SELECT sys_groupid,serial FROM dns_soa WHERE id = ? AND ".$app->tform->getAuthSQL('r'), $app->functions->intval($this->dataRecord['zone']));
 		$app->db->datalogUpdate('dns_rr', "sys_groupid = ".$soa['sys_groupid'], 'id', $this->id);
 
 		//* Update the serial number of the SOA record
@@ -129,7 +129,7 @@ class page_action extends tform_actions {
 		global $app, $conf;
 
 		//* Update the serial number of the SOA record
-		$soa = $app->db->queryOneRecord("SELECT serial FROM dns_soa WHERE id = '".$app->functions->intval($this->dataRecord["zone"])."' AND ".$app->tform->getAuthSQL('r'));
+		$soa = $app->db->queryOneRecord("SELECT serial FROM dns_soa WHERE id = ? AND ".$app->tform->getAuthSQL('r'), $app->functions->intval($this->dataRecord["zone"]));
 		$soa_id = $app->functions->intval($_POST["zone"]);
 		$serial = $app->validate_dns->increase_serial($soa["serial"]);
 		$app->db->datalogUpdate('dns_soa', "serial = $serial", 'id', $soa_id);
diff --git a/interface/web/dns/dns_dkim_get.php b/interface/web/dns/dns_dkim_get.php
index 157f894fe4e8d672f19106e15ca1187a9aee6a06..1bfa5111fca1edef79db85e57271055f1e1bc205 100644
--- a/interface/web/dns/dns_dkim_get.php
+++ b/interface/web/dns/dns_dkim_get.php
@@ -82,9 +82,9 @@ $_POST=getRealPost();
 
 if (ctype_digit($_POST['zone'])) {
 	// Get the parent soa record of the domain
-	$soa = $app->db->queryOneRecord("SELECT * FROM dns_soa WHERE id = '".$app->db->quote($_POST['zone'])."' AND ".$app->tform->getAuthSQL('r'));
+	$soa = $app->db->queryOneRecord("SELECT * FROM dns_soa WHERE id = ? AND ".$app->tform->getAuthSQL('r'), $_POST['zone']);
 
-	$public_key=$app->db->queryOneRecord("SELECT dkim_public FROM mail_domain WHERE domain = '".substr_replace($soa['origin'],'',-1)."' AND dkim = 'Y' AND ".$app->tform->getAuthSQL('r'));		
+	$public_key=$app->db->queryOneRecord("SELECT dkim_public FROM mail_domain WHERE domain = ? AND dkim = 'Y' AND ".$app->tform->getAuthSQL('r'), substr_replace($soa['origin'],'',-1));
 
 	$public_key=pub_key($public_key);
 
diff --git a/interface/web/dns/dns_wizard.php b/interface/web/dns/dns_wizard.php
index 1d295ec714de873fd8e350d116e5566a550b91b5..33f468e25e39f6974b2d2b83d2bfe98ca18d2776 100644
--- a/interface/web/dns/dns_wizard.php
+++ b/interface/web/dns/dns_wizard.php
@@ -248,7 +248,7 @@ if($_POST['create'] == 1) {
 		$public_key=$app->db->queryOneRecord("SELECT dkim_public FROM mail_domain WHERE domain = '".$app->db->quote($_POST['domain'])."' AND dkim = 'y' AND ".$app->tform->getAuthSQL('r'));
 		if ($public_key!='') {
 			$dns_record=str_replace(array("\r\n", "\n", "\r", "-----BEGIN PUBLIC KEY-----", "-----END PUBLIC KEY-----"), '', $public_key['dkim_public']);
-			$tpl_content = str_replace('TXT|'.$_POST['domain'].'.|{DKIM}', 'TXT|default._domainkey.'.$_POST['domain'].'.|v=DKIM1; t=s; p='.$dns_record, $tpl_content);
+			$tpl_content = str_replace('TXT|'.$_POST['domain'].'|{DKIM}', 'TXT|default._domainkey.'.$_POST['domain'].'.|v=DKIM1; t=s; p='.$dns_record, $tpl_content);
 		}
 	}