Yes, I'm aware of this. But that specific error message belongs to
Cisco's Talos system. 

Anyone has experience in that particular setting ?

Thank you,
Scott

On Wednesday, 25/09/2024 at 14:19 Matt Vernhout via mailop wrote:





Is it a newly registered domain, or a new sub domain? 


New domains are frequently blocked just for being new. Normally I'd
recommend 30-90 days of ownership before trying to use it for anything
email related. Also ensure that is has a valid A record, or redirects
to the mail web page. Sometimes you just need to wait it out. 


New subdomains shouldn't have this issue, unless it is not properly
authenticated? 






~ Matt



On Wed, Sep 25, 2024 at 2:05 PM Scott Q. via mailop  wrote:




Hello list,

this customer just created his domain, literally yesterday, they are
legitimate and are trying to e-mail some recipient that uses Cisco
Talos protection.
The message is bounced with an error saying it's due to the poor
reputation of a domain used in the transfer but the Cisco Talos
website shows reputation: Unknown

Could it be something else blocking it ?

Thanks,
Scott _______________________________________________
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