Hello, i am using Debian 7.3 with postfix, and am trying to send email
through our Exchange 2007 server. I have read tons of posts but i have been
unable to get it to work

I am using the postfix package that comes with Debian, and also installed
libsasl2-modules

On mail.cf i tried the following:

relayhost= exchangeserver.ourdomain.com
smtp_sasl_security_options=
smtp_sasl_auth_enable=yes
smtp_sasl_password_maps=hash:/etc/postfix/sasl/sasl_passwd

I get 5.3.5 5.7.3 Authentication unsuccessful , so i also tried using telnet
to port 25

i am using command AUTH NTLM , which returns 334, but so far i have tried
unsuccessfully to enter the login as follows:

myu...@mydomain.com
domain\myuser
exchangeserver\myuser

Using wireshark i did see my outlook client on my windows box tried to login
to exchange with:

AUTH3: call_id: 2, Fragment: Single, NTLMSSP_AUTH, User:
exchangeserver\myuser

on auth.log i get (2 times):
NTLM client step 1
NTLM client step 2
server flags: ff810205
server domain: DOMAIN
calculating NT response

on /etc/postfix/sasl/sasl_passwd i have:
exchangeserver.ourdomain.com myu...@ourdomain.com:password

I did run postmap hash:/etc/postfix/sasl/sasl_passwd and
/etc/postfix/main.cf as well

I do have a workaround if i cannot get this to work, which is to user a
virtual smtp server that is on our windows webserver, which doesn't ask for
authentication and i have already tested it and it works. But i would like
to learn how to do this properly.

Thanks in advance





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