Re: Outlook 2007 SPA authentification problem solved (NTLM plugin bug)

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On Tue, 06 May 2008 12:44:38 +0200
Sebastian Hagedorn <Hagedorn@xxxxxxxxxxxx> wrote:

> Hi,
> 
> --On 4. Mai 2008 13:10:43 +0200 CHCNET Consulting <office@xxxxxxxxxx>
> wrote:
> 
> > I've patched the ntlm plugin, to support also Outlook 2007, which
> > uses a slightly different approach to authenticate. All Outlook
> > versions prior to 2007 using a two-stage method: first they try to
> > authenticate with the username and windows domain instead of the
> > maildomain (which of course doesn't work, unless we have in our
> > sasdb user@NTDOMAIN). Outlook 2007 changed this method to
> > username@xxxxxxxxxxxxxxx  I.e. the NTLM auth is sent with username
> > and client domain, where client domain is finally correctly our
> > email domain!
> 
> I don't use Outlook or even Windows personally, so I'm a bit clueless
> about these things, but: I run a mail server with many users that
> have that combo. We allow NTLM among other SASL methods. So I'm
> interested in that patch, but I'm confused. I haven't heard any
> complaints from Outlook 2007 users so far. The reason may be that
> they don't use NTLM, I'm not sure. There have been complaints,
> however, from Vista users. I've been told that Vista requires NTLMv2
> by default. I assume that the plugin only doies NTLMv1? Or is that
> perhaps a misunderstanding?

That is correct, NTLMv2 is the default for Vista. There is a short
article regarding NTLMv2 and Microsoft here:

http://technet.microsoft.com/en-us/magazine/cc160954.aspx
 
> BTW, I just checked again and found that the issue appears to be with
> SMTP, not with IMAP.  We run sendmail with the same SASL libs, though.
> 
> Cheers, Sebastian

-- 
Gerard
gerard@xxxxxxxxxxxxx

Take your Senator to lunch this week.

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