Index: plugins/password/drivers/vpopmaild.php
===================================================================
--- plugins/password/drivers/vpopmaild.php	(revision 67bb96fef159fd360a401f815e32c088f83401b0)
+++ plugins/password/drivers/vpopmaild.php	(revision 104a14d18f99b05060a48ae7d9fbc0e96416c347)
@@ -30,4 +30,5 @@
             $result = $vpopmaild->readLine();
             if(!preg_match('/^\+OK/', $result) ) {
+                $vpopmaild->writeLine("quit");
                 $vpopmaild->disconnect();
                 return PASSWORD_ERROR;
@@ -37,4 +38,5 @@
                 $result = $vpopmaild->readLine();
                 if(!preg_match('/^\+OK/', $result) ) {
+                    $vpopmaild->writeLine("quit");
                     $vpopmaild->disconnect();
                     return PASSWORD_ERROR;
@@ -44,4 +46,5 @@
                     $vpopmaild->writeLine(".");
                     $result = $vpopmaild->readLine();
+                    $vpopmaild->writeLine("quit");
                     $vpopmaild->disconnect();
                     if (!preg_match('/^\+OK/', $result))