diff --git a/wheezy/95_alternc.conf b/wheezy/95_alternc.conf
index fd6305eb..22ceb2c8 100644
--- a/wheezy/95_alternc.conf
+++ b/wheezy/95_alternc.conf
@@ -16,7 +16,7 @@ protocols = imap pop3 sieve
 # SSL/TLS is used (LOGINDISABLED capability). Note that if the remote IP
 # matches the local IP (ie. you're connecting from the same computer), the
 # connection is considered secure and plaintext authentication is allowed.
-disable_plaintext_auth = yes
+disable_plaintext_auth = no
 
 # Space separated list of wanted authentication mechanisms:
 #   plain login digest-md5 cram-md5 ntlm rpa apop anonymous gssapi otp skey