On 10/30/18 8:46 PM, Chris Narkiewicz wrote:
> W dniu 30/10/2018 o 19:31, Peter N. M. Hansteen pisze:
>> yes, a well-known problem, and it's what nospamd (hinted at in the spamd
>> man pages) is for.
>>
>> To some extent it helps to whitelist IP addresses and networks that
>> domains list in their SPF info.
> 
> Yeah, I hoped there are some reputable sources of validated mail
> sources based on SPF and DKIM.
> 
> I'll give a try to your compiled list, but the fact you maintain
> it manually is a bit discouraging.

Fortunately MX records and by extension SPF info per domain changes
infrequently enough that a semi-manually maintained list will be mostly
right, most of the time.

But you're right in principle -- I *should* really take the time out to
recreate the list of domains that went into it and just re-generate with
smtpctl spf walk something like once per day or once per week.

All the best,
Peter
-- 
Peter N. M. Hansteen, member of the first RFC 1149 implementation team
http://bsdly.blogspot.com/ http://www.bsdly.net/ http://www.nuug.no/
"Remember to set the evil bit on all malicious network traffic"
delilah spamd[29949]: 85.152.224.147: disconnected after 42673 seconds.

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