"Byunghee HWANG (황병희) via mailop" <[email protected]> writes:

> Julian Bradfield via mailop <[email protected]> writes:
>
>> Tonight I got bounces in my mailing lists with gmail.com refusing to
>> accept messages relayed from virginmedia.com senders with the notorious 
>> 550-5.7.1 [2a00:1098:493::1      19] Gmail has detected that this message is
>>     550-5.7.1 likely suspicious due to the very low reputation of the sending
>>     550-5.7.1 domain. To best protect our users from spam, the
>> message has been
>>     550-5.7.1 blocked. For more information, go to
>>     550 5.7.1 https://support.google.com/mail/answer/188131
>> ffacd0b85a97d-439b66de588si2560984f8f.502 - gsmtp
>>
>> It's not my domain they're maligning, so it's not my problem, but it seems 
>> odd
>> that gmail should spamblock an entire fairly substantial UK-wide ISP.
>>
>> Anybody else seeing this?
>
> Hellow Julian,
>
> I believe "Reputation" is something that's difficult to define in the
> world of email. I'll leave links to some helpful documents:
>
> [1] Peter's thoughts on Email world's Chaos:
> <https://nxdomain.no/~peter/they_do_not_understand_mail_at_all.html>
>
> [2] Laura's short comments on Reputation:
> <https://www.mail-archive.com/[email protected]/msg26171.html>
>
> [3] Brandon's long comments on DKIM and Google:
> <https://gitlab.com/soyeomul/Gnus/-/raw/karma/DKIM/GMAIL-POLICY?ref_type=heads>

Here's one more reference: (2026-03-01 Debian BTS message from Yahoo.FR)
<https://gitlab.com/soyeomul/Gnus/-/raw/3de5f6ec82d0c9158a9a94b8703e029607d2eec6/stuff/dkim-google.eml>

This provides a glimpse into how important Google considers DKIM.


Sincerely, Byunghee

-- 
^고맙습니다 _布德天下_ 감사합니다_^))//

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