On Sun, May 27, 2018 3:22 am, /dev/rob0 wrote:

> The obvious solution, if dnsbl.spfbl.net is blocking real mail, is to
> stop using that list, or possibly to lower its score below your [unstated]
> threshold score.

Thanks for all replies and comments!

I guess my starting point should be that, lower the score ?

sorry, the actual setup is, advice/suggestion appreciated:

# grep postscreen  main.cf
postscreen_command_count_limit = 8
postscreen_command_time_limit = 30
postscreen_dnsbl_threshold = 3
postscreen_dnsbl_whitelist_threshold = -1
postscreen_blacklist_action = DROP
postscreen_dnsbl_action = ENFORCE
postscreen_greet_action = ENFORCE
postscreen_access_list = permit_mynetworks,
 cidr:/etc/postfix/postscreen_access.cidr
postscreen_dnsbl_threshold = 3
postscreen_dnsbl_whitelist_threshold = -1
postscreen_dnsbl_sites = zen.spamhaus.org*5, psbl.surriel.com*2,
bl.spamcop.net*2, dnsbl.spfbl.net*2,
 db.wpbl.info, dnsbl.dronebl.org, pofon.foobar.hu,
bl.ipv6.spameatingmonkey.net*2,dnsbl6.anticaptcha.net,
 bl.spameatingmonkey.net*2, bl.mailspike.net, b.barracudacentral.org*2,
dnsbl.sorbs.net, ubl.unsubscore.com, truncate.gbudb.net,
 list.dnswl.org*-3, zz.countries.nerd.dk=127.0.3.58*-1


> Another choice is DNS whitelisting:
> 145.65.91.152.list.dnswl.org. 10800 IN  TXT     "sge.net
> https://dnswl.org/s/?s=36576";
> 145.65.91.152.list.dnswl.org. 10800 IN  A       127.0.9.2

I think I'd rather avoid this path, if I can


> For more information I would refer you to my page on postscreen;
> please see the link below, in the .sig .

thanks, I'll read it today (and try to understand)


> While the helo/ehlo is logged, that's not usable either, because
> once postscreen decides to talk to a client, that client is already
> blocked.
>
> If you're not going to take the advice above, your only other option
> would be to whitelist the IP address[es].  Oh, also, you could talk to the
> DNSBL operator about theit listing criteria, and/or to the
> sending site about getting delisted.

I guess 'health' outsources their email to verizon - whilst I'll try to
contact them, I don't like my chances at getting too far - but never know.

I've struck probs with health/verizon a while back, I think, last time i
came across it, by the time I;ve looked, they were already delisted

thanks again,

Voytek



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