Hi,

I'd like to obscure the names of the DNSBLs that we use in response to
emails that are rejected. I've set up postscreen_dnsbl_reply_map and
it's working properly for most:

Oct 20 21:41:36 mail02 postfix/postscreen[17651]: NOQUEUE: reject:
RCPT from [46.102.117.88]:43226: 550 5.7.1 Service unavailable; client
[46.102.117.88] blocked using multiple DNS-based blocklists;
from=<p...@brimsems.com>, to=<g...@example.com>, proto=ESMTP,
helo=<scaffold.brimsems.com>

However, there are others where it doesn't seem to apply. Perhaps
because of the '554 5.7.1' response compared with the '550 5.7.1' from
above?

Oct 20 21:38:07 mail02 postfix/smtpd[9200]: NOQUEUE: reject: RCPT from
14-233-245-104-static.reverse.queryfoundry.net[104.245.233.14]: 554
5.7.1 Service unavailable; Sender address [tr...@spaceinfi.com]
blocked using mykey.dbl.dq.spamhaus.net;
http://www.spamhaus.org/query/dbl?domain=spaceinfi.com;
from=<tr...@spaceinfi.com> to=<beth.campb...@example.com> proto=ESMTP
helo=<spaceinfi.com>

postscreen_dnsbl_reply_map =
        pcre:$config_directory/postscreen_dnsbl_reply_map.pcre

postscreen_dnsbl_reply_map.pcre:
!/^mykey\.dbl\.dq\.spamhaus\.net$/         multiple DNS-based blocklists

Sure would appreciate some guidance here.
Thanks,
Alex

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