diff --git a/content/static/autodiscover/autodiscover.xml b/content/static/autodiscover/autodiscover.xml
index d2f93886c..9508f4972 100644
--- a/content/static/autodiscover/autodiscover.xml
+++ b/content/static/autodiscover/autodiscover.xml
@@ -11,11 +11,11 @@
 <Protocol>
 <Type>IMAP</Type>
 <Server>mail.c3d2.de</Server>
-<Port>993</Port>
+<Port>143</Port>
 <DomainRequired>on</DomainRequired>
 <LoginName></LoginName>
 <SPA>off</SPA>
-<SSL>on</SSL>
+<Encryption>TLS</Encryption>
 <AuthRequired>on</AuthRequired>
 </Protocol>