diff --git a/package.json b/package.json
index 0a45fbd05..1ecdbaaf9 100644
--- a/package.json
+++ b/package.json
@@ -40,7 +40,7 @@
 		"plugins"
 	],
 	"readmeFilename": "README.md",
-	"ownCloudPackageVersion": "4.1",
+	"ownCloudPackageVersion": "4.2",
 	"engines": {
 		"node": ">= 0.10.0"
 	},
diff --git a/rainloop/v/0.0.0/app/libraries/MailSo/Imap/Folder.php b/rainloop/v/0.0.0/app/libraries/MailSo/Imap/Folder.php
index 26dc3cfac..50fd42337 100644
--- a/rainloop/v/0.0.0/app/libraries/MailSo/Imap/Folder.php
+++ b/rainloop/v/0.0.0/app/libraries/MailSo/Imap/Folder.php
@@ -94,6 +94,11 @@ class Folder
 		if (0 < \strlen($this->sDelimiter))
 		{
 			$aNames = \explode($this->sDelimiter, $this->sFullNameRaw);
+			if (false !== \array_search('', $aNames))
+			{
+				throw new \MailSo\Base\Exceptions\InvalidArgumentException();
+			}
+
 			$this->sNameRaw = \end($aNames);
 		}
 	}
@@ -102,7 +107,7 @@ class Folder
 	 * @param string $sFullNameRaw
 	 * @param string $sDelimiter = '.'
 	 * @param array $aFlags = array()
-	 * 
+	 *
 	 * @return \MailSo\Imap\Folder
 	 *
 	 * @throws \MailSo\Base\Exceptions\InvalidArgumentException
@@ -167,7 +172,7 @@ class Folder
 	{
 		return 'INBOX' === \strtoupper($this->sFullNameRaw) || \in_array('\inbox', $this->aFlagsLowerCase);
 	}
-	
+
 	/**
 	 * @param string $sName
 	 * @param mixed $mData
@@ -176,7 +181,7 @@ class Folder
 	{
 		$this->aExtended[$sName] = $mData;
 	}
-	
+
 	/**
 	 * @param string $sName
 	 * @return mixed
diff --git a/rainloop/v/0.0.0/app/libraries/MailSo/Mail/FolderCollection.php b/rainloop/v/0.0.0/app/libraries/MailSo/Mail/FolderCollection.php
index 4cb652e61..9f0c00a0e 100644
--- a/rainloop/v/0.0.0/app/libraries/MailSo/Mail/FolderCollection.php
+++ b/rainloop/v/0.0.0/app/libraries/MailSo/Mail/FolderCollection.php
@@ -190,8 +190,15 @@ class FolderCollection extends \MailSo\Base\Collection
 
 					if (!isset($aSortedByLenImapFolders[$sNonExistenFolderFullNameRaw]))
 					{
-						$aAddedFolders[$sNonExistenFolderFullNameRaw] =
-							Folder::NewNonExistenInstance($sNonExistenFolderFullNameRaw, $sDelimiter);
+						try
+						{
+							$aAddedFolders[$sNonExistenFolderFullNameRaw] =
+								Folder::NewNonExistenInstance($sNonExistenFolderFullNameRaw, $sDelimiter);
+						}
+						catch (\Exception $oExc)
+						{
+							unset($oExc);
+						}
 					}
 				}
 			}
diff --git a/rainloop/v/0.0.0/app/libraries/RainLoop/Actions.php b/rainloop/v/0.0.0/app/libraries/RainLoop/Actions.php
index 3a0867ad2..94b57e98b 100644
--- a/rainloop/v/0.0.0/app/libraries/RainLoop/Actions.php
+++ b/rainloop/v/0.0.0/app/libraries/RainLoop/Actions.php
@@ -1077,9 +1077,13 @@ class Actions
 				$this->oLoggerAuth->AddForbiddenType(\MailSo\Log\Enumerations\Type::TIME);
 				$this->oLoggerAuth->AddForbiddenType(\MailSo\Log\Enumerations\Type::TIME_DELTA);
 
-				$this->oLoggerAuth->Add(
-					\MailSo\Log\Drivers\File::NewInstance($sAuthLogFileFullPath)
-				);
+				$oDriver = \MailSo\Log\Drivers\File::NewInstance($sAuthLogFileFullPath);
+				
+				$oDriver->DisableTimePrefix();
+				$oDriver->DisableGuidPrefix();
+				$oDriver->DisableTypedPrefix();
+
+				$this->oLoggerAuth->Add($oDriver);
 			}
 		}
 
diff --git a/rainloop/v/0.0.0/app/libraries/RainLoop/Config/Application.php b/rainloop/v/0.0.0/app/libraries/RainLoop/Config/Application.php
index 7cddc489a..de8b0a6a9 100644
--- a/rainloop/v/0.0.0/app/libraries/RainLoop/Config/Application.php
+++ b/rainloop/v/0.0.0/app/libraries/RainLoop/Config/Application.php
@@ -221,7 +221,7 @@ Examples:
 
 				'auth_logging' => array(false, 'Enable auth logging in a separate file (for fail2ban)'),
 				'auth_logging_filename' => array('fail2ban/auth-{date:Y-m-d}.txt'),
-				'auth_logging_format' => array('Auth failed: ip={request:ip} user={imap:login} host={imap:host} port={imap:port}')
+				'auth_logging_format' => array('[{date:Y-m-d H:i:s}] Auth failed: ip={request:ip} user={imap:login} host={imap:host} port={imap:port}')
 			),
 
 			'debug' => array(