Hi, I'm resending this message, still hoping for an answer.

Hello,

does dovecot support tls-on-connect for AF INET based auth-client sockets?

Rationale behind my question:

Exim can use the Dovecot auth-client socket to delegate the SMTP-AUTH authentication to Dovecot.

Currently Exim supports the AF UNIX only for this socket. Jeremy makes progress in extending this to use AF INET sockets too.

While it works with clear text communication already, during testing I was to setup the auch-client socket as an TLS server (tls-on-connect). It doesn't seem to work as I'd expect. The socket still offers clear-text only.

Here my configuration snippets regarding this socket

ssl = yes ssl_cert = </etc/dovecot/private/server.pem ssl_key = </etc/dovecot/private/server.pem

service auth {
…
    unix_listener auth-client {
        group = _exim
        mode = 0660
    }
    inet_listener auth-client {
        name = exim
        port = 4711
        ssl = yes
    }
}

SSL connections to :993 work as expected.

Best regards from Dresden/Germany
Viele Grüße aus Dresden
Heiko Schlittermann

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