3 files changed, 3 insertions, 3 deletions
diff --git a/program/steps/mail/compose.inc b/program/steps/mail/compose.inc
index 5d1fe2122..8b821c8ea 100644
--- a/program/steps/mail/compose.inc
+++ b/program/steps/mail/compose.inc
@@ -37,7 +37,7 @@ if (!is_array($_SESSION['compose']) || $_SESSION['compose']['id'] != get_input_v
 {
   rcmail_compose_cleanup();
   $_SESSION['compose'] = array(
-    'id' => uniqid(rand()),
+    'id' => uniqid(mt_rand()),
     'param' => request2param(RCUBE_INPUT_GET),
     'mailbox' => $IMAP->get_mailbox_name(),
   );
diff --git a/program/steps/mail/func.inc b/program/steps/mail/func.inc
index f6e4a9d63..ed36e84a8 100644
--- a/program/steps/mail/func.inc
+++ b/program/steps/mail/func.inc
@@ -1425,7 +1425,7 @@ function rcmail_send_mdn($uid, &$smtp_error)
       'From' => $sender,
       'To'   => $message->headers->mdn_to,
       'Subject' => rcube_label('receiptread') . ': ' . $message->subject,
-      'Message-ID' => sprintf('<%s@%s>', md5(uniqid('rcmail'.rand(),true)), $RCMAIL->config->mail_domain($_SESSION['imap_host'])),
+      'Message-ID' => sprintf('<%s@%s>', md5(uniqid('rcmail'.mt_rand(),true)), $RCMAIL->config->mail_domain($_SESSION['imap_host'])),
       'X-Sender' => $identity['email'],
       'Content-Type' => 'multipart/report; report-type=disposition-notification',
     );
diff --git a/program/steps/mail/sendmail.inc b/program/steps/mail/sendmail.inc
index c5a2ea7c3..b655ff8a7 100644
--- a/program/steps/mail/sendmail.inc
+++ b/program/steps/mail/sendmail.inc
@@ -194,7 +194,7 @@ function rcmail_email_input_format($mailto)
 if (strlen($_POST['_draft_saveid']) > 3)
   $olddraftmessageid = get_input_value('_draft_saveid', RCUBE_INPUT_POST);
 
-$message_id = sprintf('<%s@%s>', md5(uniqid('rcmail'.rand(),true)), $RCMAIL->config->mail_domain($_SESSION['imap_host']));
+$message_id = sprintf('<%s@%s>', md5(uniqid('rcmail'.mt_rand(),true)), $RCMAIL->config->mail_domain($_SESSION['imap_host']));
 
 // set default charset
 $input_charset = $OUTPUT->get_charset();