diff --git a/webui/Zend/Mail/Protocol/Imap.php b/webui/Zend/Mail/Protocol/Imap.php
index 6bb2f11..7d6351c 100644
--- a/webui/Zend/Mail/Protocol/Imap.php
+++ b/webui/Zend/Mail/Protocol/Imap.php
@@ -125,7 +125,7 @@
 
         if ($ssl === 'TLS') {
             $result = $this->requestAndResponse('STARTTLS');
-            $result = $result && stream_socket_enable_crypto($this->_socket, true, STREAM_CRYPTO_METHOD_TLS_CLIENT);
+            $result = $result && stream_socket_enable_crypto($this->_socket, true, STREAM_CRYPTO_METHOD_TLSv1_2_CLIENT);
             if (!$result) {
                 /**
                  * @see Zend_Mail_Protocol_Exception
diff --git a/webui/Zend/Mail/Protocol/Pop3.php b/webui/Zend/Mail/Protocol/Pop3.php
index 9a76228..f3157e7 100644
--- a/webui/Zend/Mail/Protocol/Pop3.php
+++ b/webui/Zend/Mail/Protocol/Pop3.php
@@ -122,7 +122,7 @@
 
         if ($ssl === 'TLS') {
             $this->request('STLS');
-            $result = stream_socket_enable_crypto($this->_socket, true, STREAM_CRYPTO_METHOD_TLS_CLIENT);
+            $result = stream_socket_enable_crypto($this->_socket, true, STREAM_CRYPTO_METHOD_TLSv1_2_CLIENT);
             if (!$result) {
                 /**
                  * @see Zend_Mail_Protocol_Exception
diff --git a/webui/Zend/Mail/Protocol/Smtp.php b/webui/Zend/Mail/Protocol/Smtp.php
index 9dd3568..efd25eb 100644
--- a/webui/Zend/Mail/Protocol/Smtp.php
+++ b/webui/Zend/Mail/Protocol/Smtp.php
@@ -203,7 +203,7 @@
         if ($this->_secure == 'tls') {
             $this->_send('STARTTLS');
             $this->_expect(220, 180);
-            if (!stream_socket_enable_crypto($this->_socket, true, STREAM_CRYPTO_METHOD_TLS_CLIENT)) {
+            if (!stream_socket_enable_crypto($this->_socket, true, STREAM_CRYPTO_METHOD_TLSv1_2_CLIENT)) {
                 /**
                  * @see Zend_Mail_Protocol_Exception
                  */