Addresses returning that response are invalid. They should be bounced and
suppressed from future mailing.

I have no idea why they chose 552, but the data shows that no one is home
at these addresses.

Luke

On Thu, Mar 11, 2021 at 2:26 AM Mawutor Amesawu via mailop <
mailop@mailop.org> wrote:

> A client has inquired about Yahoo/VMG providing [552 1 Requested mail
> action aborted, mailbox not found] errors for bounced messages. Their
> sending app normally expects 552 errors to be errors with attachments or
> message size.
>
> I understand the postmaster site indicates that any 5xx error should be
> suppressed/removed, but it seems intentional that they used this code
> rather than 554. Any insight would be appreciated.
>
> Regards,
> Mawutor
> _______________________________________________
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> mailop@mailop.org
> https://list.mailop.org/listinfo/mailop
>
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