diff --git a/src/chatmail/dovecot/doveauth.lua b/src/chatmail/dovecot/doveauth.lua
index c7fe10be..2ac709d8 100644
--- a/src/chatmail/dovecot/doveauth.lua
+++ b/src/chatmail/dovecot/doveauth.lua
@@ -8,7 +8,8 @@ end
 -- call out to python program to actually manage authentication for dovecot
 
 function chatctl_verify(user, password)
-    local handle = io.popen("python doveauth.py hexauth "..escape(user).." "..escape(password))
+    dovecot.i_debug("chatctl_verify wurde aufgerufen")
+    local handle = io.popen("python3 /home/vmail/chatctl hexauth "..escape(user).." "..escape(password))
     local result = handle:read("*a")
     handle:close()
     return split_chatctl(result)
@@ -16,7 +17,7 @@ end
 
 function chatctl_lookup(user) 
     assert(user)
-    local handle = io.popen("python doveauth.py hexlookup "..escape(user))
+    local handle = io.popen("python3 /home/vmail/chatctl hexlookup "..escape(user))
     local result = handle:read("*a")
     handle:close()
     return split_chatctl(result)
@@ -27,24 +28,21 @@ function get_extra_dovecot_output(res)
 end
 
 
-function auth_passdb_verify(request, password)
+function auth_password_verify(request, password)
     local res = chatctl_verify(request.user, password)
+    dovecot.i_debug("auth_password_verify")
     if res.status == "ok" then 
+        local extra = get_extra_dovecot_output(res)
         return dovecot.auth.PASSDB_RESULT_OK, get_extra_dovecot_output(res)
     end
     return dovecot.auth.PASSDB_RESULT_PASSWORD_MISMATCH, ""
 end
 
-function auth_passdb_lookup(request)
-    local res = chatctl_lookup(request.user) 
-    if res.status == "ok" then 
-        return dovecot.auth.PASSDB_RESULT_OK, get_extra_dovecot_output(res)
-    end
-    return dovecot.auth.PASSDB_RESULT_USER_UNKNOWN, "no such user"
-end
 
 function auth_userdb_lookup(request)
     local res = chatctl_lookup(request.user) 
+    dovecot.i_debug("auth_userdb_lookup")
+
     if res.status == "ok" then
         return dovecot.auth.USERDB_RESULT_OK, get_extra_dovecot_output(res)
     end
diff --git a/src/chatmail/dovecot/doveauth.py b/src/chatmail/dovecot/doveauth.py
index e6bb2bae..79d02a03 100644
--- a/src/chatmail/dovecot/doveauth.py
+++ b/src/chatmail/dovecot/doveauth.py
@@ -6,7 +6,7 @@ import sys
 def get_user_data(user):
     if user == b"link2xt@instant2.testrun.org":
         return dict(
-            homedir="/home/vmail/link2xt",
+            home="/home/vmail/link2xt",
             uid="vmail",
             gid="vmail",
             password=b"Ahyei6ie",
@@ -17,7 +17,7 @@ def get_user_data(user):
 def create_user(user, password):
     assert isinstance(password, bytes)
     return dict(
-        homedir=f"/home/vmail/{user}", uid="vmail", gid="vmail", password=password
+        home=f"/home/vmail/{user}", uid="vmail", gid="vmail", password=password
     )
 
 
diff --git a/src/chatmail/dovecot/dovecot.conf.j2 b/src/chatmail/dovecot/dovecot.conf.j2
index f2ae81bb..18861d3d 100644
--- a/src/chatmail/dovecot/dovecot.conf.j2
+++ b/src/chatmail/dovecot/dovecot.conf.j2
@@ -4,6 +4,11 @@ protocols = imap lmtp
 
 auth_mechanisms = plain
 
+auth_verbose = yes
+auth_debug = yes
+auth_debug_passwords = yes
+auth_verbose_passwords = plain
+
 # Authentication for system users.
 passdb {
   driver = lua