Thanks for your fast answer, and sorry for my late reply Ok after reading
and configure me mailserver with postscreen i have the following situation
when i send any mail.

[Main.cf]
postscreen_blacklist_action = drop
postscreen_access_list = permit_mynetworks, hash:/etc/postfix/access

[Master.cf]
## smtp      inet  n       -       n       -       -       smtpd
        -o content_filter=spamassassin
smtp      inet  n       -       -       -       1       postscreen
        -o content_filter=spamassassin
smtpd     pass  -       -       -       -       -       smtpd
dnsblog   unix  -       -       -       -       0       dnsblog
tlsproxy  unix  -       -       -       -       0       tlsproxy
submission inet n       -       -       -       -       smtpd
  -o content_filter=spamassassin
....

"450 4.3.2 Service currently unavailable" ??

[Mail.log]
Mar  4 21:59:40 Dovecot/imap(mca@domain): Info: Disconnected: Logged out
in=1443 out=219620 Mar  4 22:00:13 mail postfix/postscreen[1050]: CONNECT
from [IP]:45143 to [IP]:25
Mar  4 22:00:13 mail postfix/dnsblog[1060]: addr [IP] listed by domain
list.dnswl.org as 127.0.3.0 Mar  4 22:00:13 mail postfix/dnsblog[1076]: addr
IP listed by domain spamtrap.trblspam.com as 185.53.179.6 Mar  4 22:00:13
mail postfix/dnsblog[1077]: addr IP listed by domain wl.mailspike.net as
127.0.0.20
Mar  4 22:00:19 mail postfix/tlsproxy[1061]: CONNECT from [IP]:45143 Mar  4
22:00:19 mail postfix/tlsproxy[1061]: Anonymous TLS connection established
from [IP]:45143: TLSv1.2 with cipher ECDHE-RSA-AES256-SHA384 (256/256 bits)
Mar  4 22:00:19 mail postfix/postscreen[1050]: NOQUEUE: reject: RCPT from
[40.92.69.70]:45143: 450 4.3.2 Service currently unavailable; from=<form
email>, to:<email>, proto=ESMTP,
helo=<EUR02-VE1-obe.outbound.protection.outlook.com>
Mar  4 22:00:19 mail postfix/tlsproxy[1061]: DISCONNECT [IP]:45143 Mar  4
22:00:19 mail postfix/postscreen[1050]: HANGUP after 0.16 from [IP]:45143 in
tests after SMTP handshake 
Mar  4 22:00:19 mail postfix/postscreen[1050]: PASS NEW [IP]:45143
Mar  4 22:00:19 mail postfix/postscreen[1050]: DISCONNECT [IP]:45143

Equal from where i send the email to my domain this error will be appair.

--

> On Mar 1, 2018, at 12:42 AM, Maurizio Caloro <m@c> wrote:
> 
> I have have create any acceslist to deny, but if  check me situation 
> this will conntecd successfuly to me maschine

Postfix access lists control email delivery not connection establishment.
To control connection establishment use a firewall.  You can also prevent
unwanted clients from reaching the smtpd(8) service via postscreen(8)
blacklists.

-- 
        Viktor.


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