[mailop] anybody from att-mail.com here?

[Mark E. Jeftovic via mailop]

Just stumbled on something in their DNS they'll probably want to fix.

- mark

--
Mark E. Jeftovic 
Co-founder & CEO easyDNS Technologies Inc.
+1-(416)-535-8672 ext 225

/"Never expect a thing you do not want,
and never desire a thing you do not expect."
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Re: [mailop] Simple mailing list expander program for aliases files?

[John Levine via mailop]

It appears that jmurray--- via mailop  said:
>> Do you add subject tags or list footers?  If you just pass messages through 
>> without
>> changing them, it's only slightly surprising that DMARC aligns.  But most 
>> lists
>> change the messages which make the aligned DKIM signature fail.
>
>Nope, I'm staunchly agin it. 

OK, but let's just say that's a minority position in mailing lists in general.

>This is a limited community, mostly gov't and uni traffic, with a few
>freemails here and there. 
>
>So what I'm hearing is "luck". Perhaps I should revisit the policy.
>Didn't even realize DMARC with no DKIM was a thing at this point. Thank
>you.

Most of the SPF-only DMARC I see is from government agencies who get a
command from above to do DMARC and do it the cheapest quickest way
they can, by publishing SPF and DMARC records and doing nothing else.
I used to host the mail for my local town government and was having
trouble losing fairly important mail from the US Census bureau that was
SPF-only.

R's,
John
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Re: [mailop] Simple mailing list expander program for aliases files?

[John Levine via mailop]

It appears that Slavko via mailop  said:
>Dňa 25. januára 2023 20:52:39 UTC používateľ John Levine via mailop 
> napísal:
>
>>A certain number of domains assert a DMARC policy but only use SPF, no
>>DKIM signatures, so you'd expect them to fail alignment. That's the
>>slightly surprising part.
>
>That cannot be named DMARC, as it is SPF **or** DKIM based.
>That even cannot be named SPF, as SPF is based on MAIL FROM
>domain.

This might be a good time to reread RFC 7489 and learn how DMARC actually works.

R's,
John
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Re: [mailop] Simple mailing list expander program for aliases files?

[Slavko via mailop]

Dňa 25. januára 2023 20:52:39 UTC používateľ John Levine via mailop 
 napísal:

>A certain number of domains assert a DMARC policy but only use SPF, no
>DKIM signatures, so you'd expect them to fail alignment. That's the
>slightly surprising part.

That cannot be named DMARC, as it is SPF **or** DKIM based.
That even cannot be named SPF, as SPF is based on MAIL FROM
domain.

In better case they do own filtering rules on "my server, my rules"
base. In worst case, they do not understand standards and breaks
interoperability.

regards


-- 
Slavko
https://www.slavino.sk/
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Re: [mailop] Simple mailing list expander program for aliases files?

[jmurray--- via mailop]

* John Levine via mailop  [230125 15:54]:
> It appears that Jason Murray via mailop  said:
> >We process DMARC reports on the daily, and have never had an email from our 
> >lists fail alignment except in a couple of cases where we had blocked DNS 
> >queries
> >coming from destination domains' resolvers (oops).
> >
> >Is this just wild luck? Are we an anomaly, or an accident waiting to happen? 
> 
> Do you add subject tags or list footers?  If you just pass messages through 
> without
> changing them, it's only slightly surprising that DMARC aligns.  But most 
> lists
> change the messages which make the aligned DKIM signature fail.

Nope, I'm staunchly agin it. 

> 
> A certain number of domains assert a DMARC policy but only use SPF, no
> DKIM signatures, so you'd expect them to fail alignment. That's the
> slightly surprising part.

This is a limited community, mostly gov't and uni traffic, with a few
freemails here and there. 

So what I'm hearing is "luck". Perhaps I should revisit the policy.
Didn't even realize DMARC with no DKIM was a thing at this point. Thank
you.

> 
> R's,
> John
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Re: [mailop] Simple mailing list expander program for aliases files?

[John Levine via mailop]

It appears that Jason Murray via mailop  said:
>We process DMARC reports on the daily, and have never had an email from our 
>lists fail alignment except in a couple of cases where we had blocked DNS 
>queries
>coming from destination domains' resolvers (oops).
>
>Is this just wild luck? Are we an anomaly, or an accident waiting to happen? 

Do you add subject tags or list footers?  If you just pass messages through 
without
changing them, it's only slightly surprising that DMARC aligns.  But most lists
change the messages which make the aligned DKIM signature fail.

A certain number of domains assert a DMARC policy but only use SPF, no
DKIM signatures, so you'd expect them to fail alignment. That's the
slightly surprising part.

R's,
John
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Re: [mailop] Simple mailing list expander program for aliases files?

[Jason Murray via mailop]

* Dan Mahoney via mailop  [230110 17:18]:
> In a world of DKIM/DMarc compliance, especially, where “blow away the 
> original headers and forward anew” is the best answer, I’m shocked to not 
> find something like this as well.
> 

The more often I see this stated the more I feel as if I live in bizarro land. 
We are a very small operation, but we do run several chatty mailing lists, each 
with a few thousand users on a few hundred domains, mostly limited to 
subscribers who are part of one weird little professional community.

Our list software of course provides the return path, and we over-sign DKIM, we 
do add List-* headers, but we don't touch From, Subject, or the body.

We process DMARC reports on the daily, and have never had an email from our 
lists fail alignment except in a couple of cases where we had blocked DNS 
queries coming from destination domains' resolvers (oops).

Is this just wild luck? Are we an anomaly, or an accident waiting to happen? 

Warmest regards,

J
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Re: [mailop] Libero.it down

[Lukas Tribus via mailop]

On Wed, 25 Jan 2023 at 10:43, Alex Irimia via mailop  wrote:
>
> FYI
>
> All our clients seem to be getting time outs when trying to deliver email to 
> Libero.it.
> We see a lot of deferrals and little to no delivery since January 23rd.
>
> Other domains affected: virgilio.it, inwind.it, blu.it, iol.it.

They have major internal (presumably storage) issues.

(italian) message for user:
https://login.libero.it/wmd_courtesy.phtml

(italian) social media channels:
https://twitter.com/libero_it
https://www.facebook.com/libero.it/



cheers,
lukas
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[mailop] Libero.it down

[Alex Irimia via mailop]

FYI

All our clients seem to be getting time outs when trying to deliver email
to Libero.it.
We see a lot of deferrals and little to no delivery since January 23rd.

Deferral reasons:
- 451 Internal queueing error
- no answer from host

Other domains affected: virgilio.it, inwind.it, blu.it, iol.it.

-- 
Regards,
Alex Irimia


Postmastery
*Email Infrastructure, Analytics, DMARC and Deliverability*
Amsterdam, NL/Paris, FR
T: +31 20 261 0438
M: +40 757 192 953
SKYPE: alex-irimia

PS: If you are happy with our service, a review on Trustpilot
 would be greatly
appreciated.
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