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postfix-users: AUTH on port 587

AUTH on port 587

From: Janos Dohanics <web_at_nospam>
Date: Sun Oct 31 2010 - 12:20:19 GMT
To: Postfix users <postfix-users@postfix.org>

In master.cf I have enabled port 587:

submission inet n - n - - smtpd
  -o smtpd_tls_security_level=encrypt
  -o smtpd_sasl_auth_enable=yes
  -o
smtpd_client_restrictions=permit_sasl_authenticated,permit_mynetworks,reject

However, when I telnet, AUTH does not seem to be offered:

# telnet mail.example.com 587
Trying xxx.xxx.xxx.xxx...
Connected to mail.example.com.
Escape character is '^]'.
220 mail.example.com ESMTP Postfix
ehlo me
250-mail.example.com
250-PIPELINING
250-SIZE 49152000
250-ETRN
250-STARTTLS
250-ENHANCEDSTATUSCODES
250-8BITMIME
250 DSN
^]

Still, when I submit mail with Thunderbird, it asks for
username/password, and if correct, the message is accepted.

Postfix is configured to listen also on port 25 and port 2525. When I
telnet to either one of these ports, Postfix announces AUTH:

# telnet mail.example.com 2525
Trying xxx.xxx.xxx.xxx...
Connected to mail.example.com.
Escape character is '^]'.
220 mail.example.com ESMTP Postfix
ehlo me
250-mail.example.com
250-PIPELINING
250-SIZE 49152000
250-ETRN
250-STARTTLS
250-AUTH NTLM LOGIN PLAIN GSSAPI DIGEST-MD5 CRAM-MD5
250-AUTH=NTLM LOGIN PLAIN GSSAPI DIGEST-MD5 CRAM-MD5
250-ENHANCEDSTATUSCODES
250-8BITMIME
250 DSN
^]

Would you please explain this? I have postfix-2.7.1,1 on FreeBSD
7.3-STABLE

-- Janos Dohanics