Re: [mailop] ANNOUNCEMENT: The NEW invaluement "Service Provider DNSBLs" - 1st one for Sendgrid-spams!

2020-08-25 Thread Benoit Panizzon via mailop
Hi Rob

This works like a charm, blocking a lot of: bounces+8465718 atm.

Thank you for your excellent plugin!

Mit freundlichen Grüssen

-Benoît Panizzon-
-- 
I m p r o W a r e   A G-Leiter Commerce Kunden
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Zurlindenstrasse 29 Tel  +41 61 826 93 00
CH-4133 PrattelnFax  +41 61 826 93 01
Schweiz Web  http://www.imp.ch
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Re: [mailop] ANNOUNCEMENT: The NEW invaluement "Service Provider DNSBLs" - 1st one for Sendgrid-spams!

2020-08-22 Thread Ángel via mailop
On 2020-08-22 at 12:46 -0400, Chris via mailop wrote:
(...)
> This is, I think, the inject-to-google point:
> 
> > - IP address in X-Received header is different (first message:
> > 2002:a0c:f9cd:: ; second message: 2002:a2e:b4e1::)
> > - X-Google-DKIM-Signature, X-Gm-Message-State and X-Google-Smtp-Source
> > headers are different
> > 
> > Looks like Google duplicated this message somehow
> Right at the injection point.  Which is odd if Google has only one copy 
> in the sent box.

Not really. Do remember that gmail heavily deduplicates mail. Even if
you received an email twice (such as received directly + through a
mailing list), it will only show one in the mailbox.
In this case we are probably seeing the same thing, although in the Sent
folder.

So if Al sent the email through SMTP (as may be the case by the presence
of X-Google-Smtp-Source), and it timed out and was resent, but it was
actually accepted by gmail, it would be a classical email duplication.

On the other hand, if he was using gmail webmail UI (the @mail.gmail.com
at the Message-ID does not look like a local client), this might have
happened between two gmail servers, making it much more interesting.


Best regards


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Re: [mailop] ANNOUNCEMENT: The NEW invaluement "Service Provider DNSBLs" - 1st one for Sendgrid-spams!

2020-08-22 Thread Chris via mailop

On 2020-08-22 10:08, Jaroslaw Rafa via mailop wrote:

Dnia 21.08.2020 o godz. 23:00:23 Chris via mailop pisze:

Belay that, it appears to have been received by google twice -
different timestamps on the X-Received.


I compared the two messages I received.



Right, this is the first thing I noticed:


- timestamp is different
- sending host within Google is different (first message:
2607:f8b0:4864:20::f2a, helo=mail-qv1-xf2a.google.com; second message:
2a00:1450:4864:20::229, helo=mail-lj1-x229.google.com)
- SMTP id indicated by Received and X-Received headers within Google is
different


This is, I think, the inject-to-google point:


- IP address in X-Received header is different (first message:
2002:a0c:f9cd:: ; second message: 2002:a2e:b4e1::)
- X-Google-DKIM-Signature, X-Gm-Message-State and X-Google-Smtp-Source
headers are different

Looks like Google duplicated this message somehow
Right at the injection point.  Which is odd if Google has only one copy 
in the sent box.


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Re: [mailop] ANNOUNCEMENT: The NEW invaluement "Service Provider DNSBLs" - 1st one for Sendgrid-spams!

2020-08-22 Thread Jaroslaw Rafa via mailop
Dnia 21.08.2020 o godz. 23:00:23 Chris via mailop pisze:
> Belay that, it appears to have been received by google twice -
> different timestamps on the X-Received.

I compared the two messages I received.

- timestamp is different
- sending host within Google is different (first message:
2607:f8b0:4864:20::f2a, helo=mail-qv1-xf2a.google.com; second message:
2a00:1450:4864:20::229, helo=mail-lj1-x229.google.com)
- SMTP id indicated by Received and X-Received headers within Google is
different
- IP address in X-Received header is different (first message:
2002:a0c:f9cd:: ; second message: 2002:a2e:b4e1::)
- X-Google-DKIM-Signature, X-Gm-Message-State and X-Google-Smtp-Source
headers are different

Looks like Google duplicated this message somehow.
-- 
Regards,
   Jaroslaw Rafa
   r...@rafa.eu.org
--
"In a million years, when kids go to school, they're gonna know: once there
was a Hushpuppy, and she lived with her daddy in the Bathtub."

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Re: [mailop] ANNOUNCEMENT: The NEW invaluement "Service Provider DNSBLs" - 1st one for Sendgrid-spams!

2020-08-22 Thread Al Iverson via mailop
I've only got one copy in sent email here.

Al


On Fri, Aug 21, 2020 at 10:07 PM Chris via mailop  wrote:
>
> Belay that, it appears to have been received by google twice - different
> timestamps on the X-Received.
>
> On 2020-08-21 22:03, Michael Rathbun via mailop wrote:
> > On Sat, 22 Aug 2020 00:52:10 +0200, Bjoern Franke via mailop
> >  wrote:
> >
> >> Did you send this mail two times or is something wrong again with the
> >> listserver?
> >
> > The message ID strings are identical.
> >
> > mdr
> >
> >
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>
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--
Al Iverson // Wombatmail // Chicago
Song a day! https://www.wombatmail.com
Deliverability! https://spamresource.com
And DNS Tools too! https://xnnd.com

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Re: [mailop] ANNOUNCEMENT: The NEW invaluement "Service Provider DNSBLs" - 1st one for Sendgrid-spams!

2020-08-21 Thread Chris via mailop
Belay that, it appears to have been received by google twice - different 
timestamps on the X-Received.


On 2020-08-21 22:03, Michael Rathbun via mailop wrote:

On Sat, 22 Aug 2020 00:52:10 +0200, Bjoern Franke via mailop
 wrote:


Did you send this mail two times or is something wrong again with the
listserver?


The message ID strings are identical.

mdr


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Re: [mailop] ANNOUNCEMENT: The NEW invaluement "Service Provider DNSBLs" - 1st one for Sendgrid-spams!

2020-08-21 Thread Michael Rathbun via mailop
On Sat, 22 Aug 2020 00:52:10 +0200, Bjoern Franke via mailop
 wrote:

>Did you send this mail two times or is something wrong again with the 
>listserver?

The message ID strings are identical.

mdr


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Re: [mailop] ANNOUNCEMENT: The NEW invaluement "Service Provider DNSBLs" - 1st one for Sendgrid-spams!

2020-08-21 Thread Bjoern Franke via mailop

Am 21.08.20 um 23:33 schrieb Al Iverson via mailop:

This is interesting. At first I thought Rob's intent was to just
facilitate the blocking of that one ESP fully, but I see that he is
trying hard here to avoid collateral damage and that's admirable. Good
luck with this, Rob!



Did you send this mail two times or is something wrong again with the 
listserver?


Regards
Bjoern

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Re: [mailop] ANNOUNCEMENT: The NEW invaluement "Service Provider DNSBLs" - 1st one for Sendgrid-spams!

2020-08-21 Thread Al Iverson via mailop
This is interesting. At first I thought Rob's intent was to just
facilitate the blocking of that one ESP fully, but I see that he is
trying hard here to avoid collateral damage and that's admirable. Good
luck with this, Rob!

Cheers,
Al Iverson

On Fri, Aug 21, 2020 at 2:40 PM Rob McEwen via mailop  wrote:
>
> ANNOUNCEMENT: The NEW invaluement "Service Provider DNSBLs" - 1st one for 
> Sendgrid-spams!
>
> ...a collection of a new TYPE of DNSBL, with the FIRST of these having a 
> focus on Sendgrid-sent spams. AND - there is a FREE version of this - that 
> can be used NOW! (well... might need a SpamAssassin rule or two! Your help 
> appreciated!):
>
> INFO AND INSTRUCTIONS HERE:
>
> https://www.invaluement.com/serviceproviderdnsbl/
>
> This provides a way to surgically block Sendgrid's WORST spammers, yet 
> without the massive collateral damage that would happen if blocking Sendgrid 
> domains and IP addresses. But we're NOT stopping at the phishes and viruses - 
> and we're not finished! There will be some well-deserved economic pain, that 
> puts the recipients' best interests at heart. Therefore, flagrant "cold 
> email" spamming to recipients who don't even know the sender - is also being 
> targeted - first with the absolute worst - and then progressing to other 
> offenders as we make adjustments in the coming weeks.
>
> --
> Rob McEwen
> https://www.invaluement.com
>
>
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-- 
Al Iverson // Wombatmail // Chicago
Song a day! https://www.wombatmail.com
Deliverability! https://spamresource.com
And DNS Tools too! https://xnnd.com

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