Re: [mlmmj] Problems with spam filters

[email protected] (Martin Brampton), 2020.10.11 (Sun) 15:04 (CEST):
> Despite it being neat software, I'm finding it near impossible to run mlmmj
> mailing lists because mail is being treated as junk by big mail outfits such
> as hotmail and btinternet.

SPF does not go along too well with traditional mailing lists:
(thats why more and more mailing lists rewrite the From:)

$ dig +short black-sheep-research.com mx
100 mx.yorkshiremail.com.

$ dig +short black-sheep-research.com txt
"v=spf1 include:yorkshiremail.com ~all"

$ dig +short yorkshiremail.com mx
100 mx.yorkshiremail.com.

$ dig +short mx.yorkshiremail.com
164.90.179.118

$ dig +short yorkshiremail.com txt
"v=spf1 a ip4:79.79.41.36 ip4:164.90.179.118 include:spf.smtp2go.com include:servers.mcsv.net ?all"

... but I get your mail, via the mlmmj list from this IP:

Received: from adhara.zumppe.net (adhara.zumppe.net [198.101.246.47])

This is why my rspamd gives your mail 3 spammy points:

R_DKIM_REJECT(1.00)[smtpcorp.com:s=a1-4,black-sheep-research.com:s=s151337];
DMARC_POLICY_REJECT(2.00)[black-sheep-research.com : No valid SPF,reject];

below just included for completeness, no score assigned:

DKIM_TRACE(0.00)[smtpcorp.com:-,black-sheep-research.com:-];
FROM_NEQ_ENVFROM(0.00)[[email protected],[email protected]]

I have no idea whether mlmmj has an option to rewrite the "From:"!
(And I hate the rewritten "From:"s...)

Marcus

> My own mail server (which includes rspamd) accepts mlmmj mailing list mail
> without a problem. And I can observe that my mail, as received, is checked
> to be valid for DKIM, SPF and DMARC. I've also checked some mail against
> e.g. mail-tester.com and not found any problems.
> 
> My mail server is not blacklisted anywhere.
> 
> Despite this, a number of recipients seem to have messages routinely put in
> junk, and they don't all monitor junk. This creates a big problem, and makes
> a mailing list unusable.
> 
> Obviously, I have no influence with hotmail, btinternet, etc who probably
> wouldn't even reply to me.
> 
> It seems that big commercial outfits want to force people into paid services
> and to prevent them using simple but valuable mechanisms such as an ordinary
> mailing list.
> 
> Is there anything I can do to deal with this problem?
> 
> 

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