How to configure Postfix client relay to Exchange 2010 server

Posted by helcim on Server Fault See other posts from Server Fault or by helcim
Published on 2010-10-07T09:02:41Z Indexed on 2011/02/23 15:27 UTC
Read the original article Hit count: 278

Filed under:

postfix

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exchange-2010

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relay

I'm getting

(delivery temporarily suspended: SASL authentication failed; server myserver.com[xxx.xxx.xxx.x] said: 535 5.7.3 Authentication unsuccessful)

when I try to relay mail from Postfix 2.5.5-1.1 on Debian Lenny box to Exchange 2010.

I think I tried all possible combinations but I'm definitely missing something. Here is relevant part of main.cf:

broken_sasl_auth_clients = yes
smtp_sasl_auth_enable = yes
smtp_sasl_security_options = noanonymous
smtp_sasl_password_maps = hash:/etc/postfix/sasl_passwd
smtp_pix_workarounds =
smtp_sasl_type = cyrus
smtp_always_send_ehlo = yes
relayhost = myserver.com

And I got libsasl2-modules installed. Anybody managed to successfully relay mail between Postfix and Exchange? Oh, and I already double-checked if password is right.

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