Grant:
> Aug 26 21:21:35 [postfix/tlsproxy] CONNECT from [209.85.219.51]:41193
> Aug 26 21:21:36 [postfix/postscreen] NOQUEUE: reject: RCPT from
> [209.85.219.51]:41193: 450 4.3.2 Service currently unavailable;
> from=<mas...@gmail.com>, to=<mas...@masked.com>, proto=ESMTP,
> helo=<mail-oa0-f51.google.com>
> Aug 26 21:21:36 [postfix/tlsproxy] DISCONNECT [209.85.219.51]:41193
...
> postscreen_bare_newline_enable = yes
> postscreen_non_smtp_command_enable = yes
> postscreen_pipelining_enable = yes
As documented, the above settings will cause Postfix to reject mail
with 4XX:
http://www.postfix.org/POSTSCREEN_README.html#after_220
> postscreen_dnsbl_sites = zen.spamhaus.org list.dnswl.org*-1
> postscreen_dnsbl_whitelist_threshold = -1
This feature requires Postfix 2.11 snapshot 20130512 or later.
You can find out which version you have with:
postconf mail_version
> Aug 23 06:35:11 [postfix/smtp] 72A0E5C801E: conversation with
> mx1.comcast.net[68.87.26.147] timed out while receiving the initial
> server greeting
> Aug 23 09:04:03 [postfix/smtp] 80A8A5C801E: lost connection with
> mx1.comcast.net[68.87.26.147] while receiving the initial server
> greeting
These warnings are from your Postfix SMTP client.
Wietse
