dovecot - May 2010 - authentification failure: double quotes in password

we use Passdb LDAP with authentication binds against an Active Directory 
Server. The problem with one of our users seems to be the usage of 
double quotes in his password, as the windows-login works:

/var/log/dovecot-info.log

auth(default): Info: ldap(testuser 77.22.xx.xxx): invalid credentials 
(given password: xxxxx"xxxxxxx)

Which chars in passwords does the dovecot auth process not like?
Is there something similar to auth_username_chars for passwords?

thanks,
martin

On Mon, 2010-05-10 at 18:53 +0200, Martin Ott wrote:
> auth(default): Info: ldap(testuser 77.22.xx.xxx): invalid credentials 
> (given password: xxxxx"xxxxxxx)
So I guess that's with auth binding?
> Which chars in passwords does the dovecot auth process not like?
> Is there something similar to auth_username_chars for passwords?
No. All chars are valid. Perhaps this is OpenLDAP/AD bug? The code to do
auth binding looks like:

	request->msgid = ldap_bind(conn->ld, brequest->dn,
				   request->auth_request->mech_password,
				   LDAP_AUTH_SIMPLE);

There's no escaping for the password. I don't see how it could be
Dovecot's fault.