On 31.05.22 12:55, SysAdmin EM wrote:
I am checking the mail queue of my postfix server and I am seeing errors in
writing mail accounts, which refer to real domains of free mail providers
such as hotmail, gmail, yahoo.

BC2CC607AF   881286 Tue May 31 05:19:53  [email protected]
              (connect to hotmaul.com[54.159.98.68]:25: Connection timed
out)
                                        [email protected]

BAF5D60E06     3071 Fri May 27 03:32:45  [email protected]
            (connect to hormail.com[104.215.95.187]:25: Connection timed
out)
                                        [email protected]

Any chance of blocking the MX of a recipient? Reading the documentation I
found the parameter "check_sender_mx_access" but I think it refers to a
sender and not a recipient.

there's also check_recipient_mx_access, I use few of them for this kind of abusers.

--
Matus UHLAR - fantomas, [email protected] ; http://www.fantomas.sk/
Warning: I wish NOT to receive e-mail advertising to this address.
Varovanie: na tuto adresu chcem NEDOSTAVAT akukolvek reklamnu postu.
Atheism is a non-prophet organization.

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