diff --git a/lib/IMAP/HordeImapClient.php b/lib/IMAP/HordeImapClient.php
index a962fed53b..84e149be2d 100644
--- a/lib/IMAP/HordeImapClient.php
+++ b/lib/IMAP/HordeImapClient.php
@@ -91,7 +91,7 @@ protected function _login() {
 			return $this->imapLogin();
 		} catch (Horde_Imap_Client_Exception $e) {
 			if ($e->getCode() === Horde_Imap_Client_Exception::LOGIN_AUTHENTICATIONFAILED
-				&& $e->getMessage() === 'Authentication failed.') {
+				&& in_array($e->getMessage(), ['Authentication failed.', 'Mail server denied authentication.'], true)) {
 				$this->rateLimiterCache->inc($cacheKey);
 				if ($this->rateLimiterCache instanceof IMemcacheTTL) {
 					$this->rateLimiterCache->setTTL($cacheKey, self::RATE_LIMIT_WINDOW);
diff --git a/src/components/MailboxThread.vue b/src/components/MailboxThread.vue
index bb3e10d1a2..52a5e6e714 100644
--- a/src/components/MailboxThread.vue
+++ b/src/components/MailboxThread.vue
@@ -615,12 +615,9 @@ export default {
 
 :deep(.app-content-list) {
 	flex: 1 1 auto;
-	height: 100% !important;
 	min-height: 0;
-	position: absolute;
 	overflow: scroll;
 	width: 100% !important;
-	top: 40px;
 }
 
 :deep(.app-content-wrapper) {