* Washington Odhiambo via mailop <[email protected]>:
> > What comes to mind?
> >
> > gmail (and exchange online) enforce a "no auth, no entry" policy that
> > rejects
> > messages from a sender if that sender doesn't implement email
> > authentication
> > (SPF, DKIM, DMARC) *and* sends more than 5k messages /day.
> >
> > But you seem to have done your homework:
> >
> > % dig +short TXT lists.kictanet.or.ke
> > "v=spf1 a:eu.kictanet.or.ke mx:eu.kictanet.or.ke ip4:62.169.28.150 -all"
> >
> > # NOTE and Off-Topic: a:eu.kictanet.or.ke and mx:eu.kictanet.or.ke repeat
> > your
> > # final ip4:62.169.28.150 statement. Unless you really need them for other
> > # purposes I'd get rid of a:eu.kictanet.or.ke and mx:eu.kictanet.or.ke and
> > # leave only ip4:62.169.28.150. Having the DNS names in there causes extra
> > DNS
> > # lookups.
> >
> > % dig +short TXT _dmarc.lists.kictanet.or.ke
> > "v=DMARC1;p=reject;sp=none;pct=100;rua=mailto:[email protected]
> > ;ruf=mailto:[email protected];ri=86400;fo=1;";
> >
> > # NOTE: If I am correct, then the last semikolon is not required and you
> > can
> > # end "... fo=1". IIRC pct=100 has been deprecated and - at least in EU -
> > # asking for ruf-reports is privacy-invasive and forbidden.
> >
> 
> I will make those DNS changes you've suggested, although I think they are
> cosmetic, right?

ACK. I consider them cosmetic and the trailing semicolon should not make a DMARC
verifier fail.


> > What else?
> >
> > DKIM signing errors? Do you DKIM sign messages? Do the lists behave
> > DMARC-compliant, i.e. do not break existing DKIM signatures, do not modify
> > Subject:-Header and the message body?
> >
> 
> All list posts are DKIM signed.
> Mailman3 does DMARC mitigation unconditionally.
> Nothing get's modified that is unbecoming.
> 
> 
> Also, if that listserver sends mail out periodically only it will loose it's
> > (good) reputation and the IP will have to build up a good reputation again.
> > During that time messages from the server are subject to strict rate
> > limits.
> >
> 
> The ML is relatively active. And even when not, I do send two automated
> emails to the list - on 15th of every month and at the end of every month.

Hmmm… that does it for my list of typical issues running a MLM in times of
email authentication. Unless somebody else sees other issues I'd try to get a
hold on someone @gmail - yeah! I know. There are less frustrating tasks on
this planet - and ask them to tell you what their platform says the MLM is
doing wrong. Anything else will likely send you down the alley of speculation…
:-|

Best,

p@rick

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