I've recently signed up for Spamhaus' free service. They were helpful enough to
provide postfix setup guide to minimize the pain. I've modified
postscreen_dnsbl_sites accordingly and this morning was greeted by the following
BS...
Mar 09 01:49:12 lan postfix/postscreen[182934]: CONNECT from
[45.90.5.195]:45727 to [192.168.234.2]:25
Mar 09 01:49:12 lan postfix/dnsblog[182936]: addr 45.90.5.195 listed by domain
pvv7qvcjnfkjebj3kgqllgl5g4.zrd.dq.spamhaus.net as 127.0.2.255
Mar 09 01:49:12 lan postfix/dnsblog[182937]: addr 45.90.5.195 listed by domain
pvv7qvcjnfkjebj3kgqllgl5g4.dbl.dq.spamhaus.net as 127.0.1.255
Mar 09 01:49:18 lan postfix/postscreen[182934]: DNSBL rank 2 for
[45.90.5.195]:45727
Mar 09 01:49:19 lan postfix/tlsproxy[182942]: CONNECT from [45.90.5.195]:45727
Mar 09 01:49:19 lan postfix/tlsproxy[182942]: Anonymous TLS connection
established from [45.90.5.195]:45727: TLSv1.3 with cipher
TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature
ECDSA (prime256v1) server-digest SHA256
Mar 09 01:49:19 lan postfix/postscreen[182934]: NOQUEUE: reject: RCPT from
[45.90.5.195]:45727: 550 5.7.1 Service unavailable; client [45.90.5.195]
blocked using 554 $rbl_class $rbl_what blocked using ZRD - domain too young;
from=<postfix-users-boun...@postfix.org>, to=<pet...@nucleusys.com>,
proto=ESMTP, helo=<list.sys4.de>
Mar 09 01:49:19 lan postfix/tlsproxy[182942]: DISCONNECT [45.90.5.195]:45727
Mar 09 01:49:19 lan postfix/postscreen[182934]: DISCONNECT [45.90.5.195]:45727
Apart from me not setting up properly a few variables i was shocked to see that:
"blocked using ZRD - domain too young;"
I didn't know postfix mailing list is still in its pubescent, not-quite-legal to
drink age...
And what is 45.90.5.195 doing in Spamhaus' ZDR and DBL lists? Not being able to
receive messages from postfix.org is a big red flag for me, one that questions
the overall Spamhaus usefulness. Thoughts?
I had to remove zrd.dq.spamhaus.net from postscreen_dnsbl_sites so i can
continue to spam you guys with my moronic questions. :)
Petko
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