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
u...@gmail.com, then the default server certificate should work.
If you send to a customer domain hosted at Google, then SNI may be
necessary.
Wietse
