Index: class.tx_felogin_pi1.php
===================================================================
--- class.tx_felogin_pi1.php	(Revision 9188)
+++ class.tx_felogin_pi1.php	(Arbeitskopie)
@@ -359,15 +359,22 @@
 			}
 		}
 
-		if ($this->conf['linkPrefix'] == -1 && !$isAbsRelPrefix) {
+		$typolink = $this->pi_getPageLink($GLOBALS['TSFE']->id, '', array(
+			$this->prefixId . '[user]' => $user['uid'],
+			$this->prefixId . '[forgothash]' => $randHash
+		));
+
+			// link has already a protocol  ? 
+		if($typolinkHasProtocol = preg_match('%^(http)(s?)://%m', $typolink)) {
+			$this->conf['linkPrefix'] = null;
+		}
+		
+		if (($this->conf['linkPrefix'] == -1) && !$isAbsRelPrefix && !$typolinkHasProtocol) {
 				// no preix is set, return the error
 			return $this->pi_getLL('ll_change_password_nolinkprefix_message');
 		}
 
-		$link = ($isAbsRelPrefix ? '' : $this->conf['linkPrefix']) . $this->pi_getPageLink($GLOBALS['TSFE']->id, '', array(
-			$this->prefixId . '[user]' => $user['uid'],
-			$this->prefixId . '[forgothash]' => $randHash
-		));
+		$link = $this->conf['linkPrefix'] . $typolink;
 
 		$msg = sprintf($this->pi_getLL('ll_forgot_validate_reset_password', '', 0), $user['username'], $link, $validEndString);