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postfix-users: smtp_tls_note_starttls_offer=yes not working?

smtp_tls_note_starttls_offer=yes not working?

From: Yang Zhang <yanghatespam_at_nospam>
Date: Mon Oct 18 2010 - 21:24:06 GMT
To: Postfix users <postfix-users@postfix.org>

According to the docs [1, 2], "smtp_tls_note_starttls_offer=yes"
should log when a server offers STARTTLS. However, I've been testing
among my own SMTP servers, and while I can verify that TLS is being
used (with "smtpd_tls_loglevel=1" on the smtpd side), I can't tell
what TLS capabilities the smtp (client) is seeing. I'm using Postfix
2.7.0.

How do I make smtp_tls_note_starttls_offer work? Thanks in advance.

[1] http://www.postfix.org/TLS_LEGACY_README.html
[2] http://www.postfix.org/postconf.5.html
-- Yang Zhang http://yz.mit.edu/