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  1. #1

    postfix realy on ms exchange using tls+ssl "offered null AUTH mechanism list"

    Hi all,

    Im trying to make postfix to relay on exchanger server using account to authenticate, the exchange requires tls + ssl connection and here is my configs:
    smtpd_use_tls = yes
    smtp_sasl_auth_enable = yes
    smtp_sasl_password_maps = hash:/etc/postfix/sasl_passwd
    smtp_sasl_security_options =
    smtp_enforce_tls = yes
    smtp_helo_name =
    smtp_tls_cert_file = /etc/postfix/smtp-client.pem
    smtp_tls_key_file = $smtp_tls_cert_file
    smtp_tls_CAfile = /etc/postfix/CAcert.pem
    smtp_sasl_tls_security_options = $smtp_sasl_security_options
    smtp_sasl_tls_verified_security_options = $smtp_sasl_security_options

    but it replies with "offered null AUTH mechanism list" and then the tls connection established.
    if I used telnet to the remote host and I issued EHLO command it does not provide me with any auth mechanism just "AUTH" .
    But if I used
    openssl s_client -starttls smtp -crlf -connect it provide the "AUTH LOGIN" mechanism.

    I believe that postfix doesn't start ssl connection, please any help ??
    Last edited by maq; 01-08-2010 at 01:37 PM. Reason: change the address

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