David Ballano wrote:
[snip]
ok, now I understand, so if someone don't use TLS, my server don't
show AUTH (like I can see above) keyword and they can't put a user
and pass.
but with tls smtp accepts AUTH
yes.
[snip]
is a public server, I mean I get mails from internet, and people can
use it from outside.
so tls is required, isn't
so you can't require TLS. many servers do not implement it.
if you want to force senders from your domain to authenticate, check
reject_sender_login_mismatch and its friends. but if you have internal
mail servers, make sure not to block them.
