Maurizio Caloro:
> Wietse Venema:
> > Maurizio Caloro:
> >> > Oct 2 15:54:27 nmail postfix/smtp[30568]: warning:
> >> > smtp_tls_policy_maps, next-hop destination "gmail.com": invalid
> attribute name: "servername"
> >>
> >> Attribute name 'servername' requires Postfix 3.4 or later.
> >>
> >>'servername' is used for SNI. It ensures that the remote SMTP server
> >>will
> send Postfix a TLS certificate for the recipient's domain.
> >>Depending on the destination SNI may not be needed; if you send to
> [email protected], then the default server certificate should work.
> >>If you send to a customer domain hosted at Google, then SNI may be
> necessary.
> >>
> >> Wietse
>
> >Ok, thanks now i see the servername mistake, my debian run with postfix,
> mail_version = 3.1.15 And i'am using option " smtp_tls_security_level =
> may", i was thinking to add now mta.sts but i >need now more read., to go
> forrward... :-/
>
> Please any update help possible?
Perhaps mts-sts-service can be configured not to send 'servername'.
Otherwise you will need a newer Postfix that support servername and
SNI. I can't add servername support to postfix 3.1.
Wietse
