Hi,
I am using dovecot with postfix for authentication.
Everything (TLS/SSL, authentication) is working fine, except I cannot
find a way to force STARTLS before authentication:
20 mail2.cs.ait.ac.th ESMTP Postfix (2.6.2)
EHLO [192.41.170.57]
250-mail2.cs.ait.ac.th
250-PIPELINING
250-SIZE 10240000
250-VRFY
250-ETRN
250-STARTTLS
250-AUTH PLAIN LOGIN
250-AUTH=PLAIN LOGIN
250-ENHANCEDSTATUSCODES
250-8BITMIME
250 DSN
AUTH PLAIN XXXX
235 2.7.0 Authentication successful
The reply I got from Dovecot mailing list is:
> disable_plaintext_auth affects logging in to dovecot IMAP/POP3 server.
> This is a SMTP session with Postfix, you'll have to configure Postfix
> not to allow plain text authentication before STARTTLS.
But I am doubtful because the authentication is dovecot job, so I
don't see how the configuration could be in postfix.
Amy insight is more than welcome.
Best regards,
Olivier
