PostScreen
==========

Postscreen Configurations::

    postscreen_dnsbl_threshold = 2
    # commented out the following to remove b.barracuda* as it denies access without subscription or something. trying without barracuda.
    #postscreen_dnsbl_sites = zen.spamhaus.org*2, bl.spamcop.net*1, b.barracudacentral.org*1
    postscreen_dnsbl_sites = zen.spamhaus.org*2, bl.spamcop.net*1, b.barracudacentral.org*1
    postscreen_dnsbl_action = enforce
    postscreen_greet_action = enforce
    #postscreen_pipelining_enable = yes
    #postscreen_non_smtp_command_enable = yes
    #postscreen_bare_newline_enable = yes


Sample Log::

    Nov  3 17:25:09 mx2 postfix/postscreen[5830]: CONNECT from [221.208.90.134]:19716 to [*]:25
    Nov  3 17:25:09 mx2 postfix/dnsblog[5833]: addr 221.208.90.134 listed by domain zen.spamhaus.org as 127.0.0.3
    Nov  3 17:25:09 mx2 postfix/dnsblog[5833]: addr 221.208.90.134 listed by domain zen.spamhaus.org as 127.0.0.11
    Nov  3 17:25:09 mx2 postfix/dnsblog[5831]: addr 221.208.90.134 listed by domain b.barracudacentral.org as 127.0.0.2
    Nov  3 17:25:15 mx2 postfix/postscreen[5830]: DNSBL rank 3 for [221.208.90.134]:19716
    Nov  3 17:25:15 mx2 postfix/postscreen[5830]: NOQUEUE: reject: RCPT from [221.208.90.134]:19716: 550 5.7.1 Service unavailable; client [221.208.90.134] blocked using zen.spamhaus.org; from=<jonellemacfarland@lasqdev.com>, to=<hostmaster@*>, proto=ESMTP, helo=<lasqdev.com>
    Nov  3 17:25:16 mx2 postfix/postscreen[5830]: DISCONNECT [221.208.90.134]:19716