Hi,

my rua report was rejected at RCPT stage with:

    SMTP error from remote mail server after RCPT 
TO:<aggrep.dm...@protect-sk.com>:
    550 5.4.1 Recipient address rejected: Access denied. AS(201806281)
    [DB5EUR01FT030.eop-EUR01.prod.protection.outlook.com]

I search the Internet, but i found multiple similar posts, but no clean
description what is cause, as most of them talk about something in
exchange, which i am not familiar with.

Please, can someone explain me, what this rejection means? What is (can
be) real reason?

thanks

-- 
Slavko
http://slavino.sk

Attachment: pgp3tJ3XiP_Uh.pgp
Description: Digitálny podpis OpenPGP

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