Error using IMAP authentication

[nerving]

Hello everyone,

i installed Version : 6.20.0 Rev8 (2011-04-21 12:40:37) on Debian lenny. Everything works fine using database authentication. We now want to use IMAP authentication, so I installed the authetication IMAP package, apt automatically deinstalled authetication database package.
After restarting groupware/admin daemon nobody was able to login via web and eas.
I found the following error in the goupware log:

12.05.2011 10:51:48 com.openexchange.authentication.imap.impl.IMAPAuth entication handleLoginInfo
INFO: Authentication error on host localhost:143 for user XXXXXX
javax.mail.MessagingException: Can't load NTLM authenticator;

How do I install the missing NTLM authenticator?

Greets

Christoph Pfund

[Carsten Hoeger]

Configure your imap server to only offer plain authentication (using SSL/TLS).
If you're using cyrus-sasl, deinstall all authmechs but plain.
Or specify authmechs you want to use in the corresponding config file.

[nerving]

Hi Carsten,

thank you for your help.

I'm using cyrus-sasl, and entering "sasl_mech_list: plain" in /etc/imapd.conf did the trick.