Re: using SPF or DKIM instead of greylisting?

2014-05-30 Thread Gilles Chehade
On Fri, May 30, 2014 at 11:26:18AM +0200, Ji Navr??til wrote:
 Hello,
 
 I???m using pf greylisting on OpenBSD. More and more emails from Google are 
 delayed and few are not delivered at all.
 
 This https://support.google.com/mail/answer/180063 Google article suggest to 
 replace greylisting with SPF or DKIM.
 
 What is your anti SPAM strategy please? Are available SPF and DKIM 
 configurations examples for OpenSMTPD?
 
 Thak you for your recommendations.
 

I only use greylisting and fopr big hosts like gmail and yahoo, I have a
script that queries their SPF records to whitelist the MX servers that
they advertise.


-- 
Gilles Chehade

https://www.poolp.org  @poolpOrg

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Re: using SPF or DKIM instead of greylisting?

2014-05-30 Thread Jiří Navrátil
V 30. května 2014 at 11:38:43, Gilles Chehade (gil...@poolp.org) napsáno:
 What is your anti SPAM strategy please? Are available SPF and DKIM 
 configurations examples for OpenSMTPD? 
 
 Thak you for your recommendations. 
 

I only use greylisting and fopr big hosts like gmail and yahoo, I have a 
script that queries their SPF records to whitelist the MX servers that 
they advertise. 


Thank you for quick reply.

That looks as reasonable way for me. Could you share your script, please?

Jiri Navratil

Re: using SPF or DKIM instead of greylisting?

2014-05-30 Thread Sunil Nimmagadda
 On Fri, 30 May 2014 11:45:13 +0200, Ji=C5=99=C3=AD Navr=C3=A1til jiri@navr=
 atil.cz
 wrote:

  V 30. kv=C4=9Btna 2014 at 11:38:43, Gilles Chehade (gil...@poolp.org)
  naps=C3=A1no:
   What is your anti SPAM strategy please? Are available SPF and DKIM
   configurations examples for OpenSMTPD?=C2=A0
  =C2=A0
   Thak you for your recommendations.=C2=A0
  =C2=A0
 =20
  I only use greylisting and fopr big hosts like gmail and yahoo, I
  have a script that queries their SPF records to whitelist the MX
  servers that they advertise.=C2=A0
 =20
 =20
  Thank you for quick reply.
 =20
  That looks as reasonable way for me. Could you share your script,
  please?

 I have quite the same setup than Gilles, though I'm lazier so I use the
 list from Peter N. M. Hansteen : http://www.bsdly.net/~peter/nospamd

  Jiri Navratil

 Cheers,
 --=20
 Vigdis

I am using bgp-spamd.net whitelisting for my domain in addition to
spamd.  It currently has ~ 91825 whitelisted ips. I had a similar
experience with github trying to send a mail with different IP each
time when spamd grey-trapped the first attempt. bgp-spamd whitelisted
IPs had all the IPs with which github was trying to send mail.


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Re: using SPF or DKIM instead of greylisting?

2014-05-30 Thread John D. Verne
On Fri, May 30, 2014 at 11:35:45AM +0200, Gilles Chehade wrote:
 On Fri, May 30, 2014 at 11:26:18AM +0200, Ji Navr??til wrote:
  Hello,
  
  I???m using pf greylisting on OpenBSD. More and more emails from Google are 
  delayed and few are not delivered at all.
  
  This https://support.google.com/mail/answer/180063 Google article suggest 
  to replace greylisting with SPF or DKIM.
  
  What is your anti SPAM strategy please? Are available SPF and DKIM 
  configurations examples for OpenSMTPD?
  
  Thak you for your recommendations.
  
 
 I only use greylisting and fopr big hosts like gmail and yahoo, I have a
 script that queries their SPF records to whitelist the MX servers that
 they advertise.
 
I tried to do this, but there were just too many to keep track of, and I
noticed that a fair amount of the hosts connecting weren't even in the SPF.
Greylisting became less and less helpful, unfortunately.

I've been running blacklist-only for a few years. Luckily, I don't have
a busy host.

-- 
John D. Verne
j...@clevermonkey.org

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