Hello I have configured Dovecot against AD, using outlook with NTLM and is working like a charm... Try the following this link...

http://wiki.dovecot.org/HowTo/ActiveDirectoryNtlm

I hope this will help you...

-----Original Message----- From: dovecot-bounces@dovecot.org [mailto:dovecot-bounces@dovecot.org] On Behalf Of Maria Jose Yañez Dacosta Sent: viernes, 28 de junio de 2013 02:59 p.m. To: Dovecot Mailing List Subject: Re: [Dovecot] Passdb + single sing on + NTLM + Thunderbird.

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Thank you very much for the reply :) I try with that.

2013/6/27 Stan Hoeppner stan@hardwarefreak.com

On 6/27/2013 7:48 AM, Maria Jose Yañez Dacosta wrote:

...

Thanks!!. I have a little question, This page explains AUTH = GSSAPI but I'm interested in AUTH = NTLM. I want to get single sign on with clients in Windows against a Windows Active Directory. For NTLM should use another library like pam_krb5.so? Sorry for so many questions and thanks again

http://wiki2.dovecot.org/Authentication/Mechanisms/Winbind http://wiki2.dovecot.org/Authentication/Mechanisms/NTLM

...

2013/6/26 Stan Hoeppner stan@hardwarefreak.com

...

On 6/26/2013 1:17 PM, Maria Jose Yañez Dacosta wrote:

...

I want to use single sign on from Windows with Thunderbird or Outlook using NTLM.

http://wiki2.dovecot.org/Authentication/Kerberos

-- Maria José