Examples?
On 2024-01-18 13:33, hg user via mailop wrote:
I also saw a spike in IP reported as malicious by spamhaus: IPs that
have been sending emails for years: standard, business emails from
personal accounts of people in airlines and hotels are now triggering
spamhaus IP rbl... those IPs are NOT from big email providers.
On Tue, Jan 16, 2024 at 10:43 PM Gellner, Oliver via mailop
<mailop@mailop.org <mailto:mailop@mailop.org>> wrote:
> On 16.01.2024 at 22:16 Atro Tossavainen via mailop wrote:
>
>
>>>
https://www.talosintelligence.com/reputation_center/lookup?search=66.175.222.108
<https://www.talosintelligence.com/reputation_center/lookup?search=66.175.222.108>
>> Thanks for this; I wasn't familiar with Talos Intelligence. Do
they publish
>> a blocklist?
>
> Paying users only. Paying users include the Finnish government's
> internal outsourcing center (Valtori) and Telia (our largest telco).
> Their error messages are shit, you don't even know where to look:
>
> /var/log/old/maillog-20220410.gz
>
> Apr 7 12:47:44 mail postfix/smtp[11896]: 52E23100EBBCA:
to=<postmas...@teliacompany.com
<mailto:postmas...@teliacompany.com>>, relay=mail.cm.telia.net
<http://mail.cm.telia.net>[80.74.207.118]:25, delay=0.54,
delays=0.09/0/0.14/0.31, dsn=5.0.0, status=bounced (host
mail.cm.telia.net <http://mail.cm.telia.net>[80.74.207.118] said:
554 Your access to this mail system has been rejected due to poor
reputation of a domain used in message transfer (in reply to end of
DATA command))
As a side note because our replies overlapped: This specific error
message at the end of DATA is not about a low Senderbase Reputation
Score, which I mentioned in my other reply. It refers to a domain
which Talos considers not trustworthy, usually located in the From
or Reply-To header. So it’s not about the MTA IP address, which the
thread starters problem originally was about.
—
BR Oliver
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