[pfx] Re: I keep getting disabled on [email protected] mailing list

On 14.06.26 19:06, Al via Postfix-users wrote:
>I have taken a look at my logs:
>
>This is the error:
>
>Jun  9 12:03:41 sequoia postfix/smtpd[52759]: NOQUEUE: reject: RCPT 
>from unknown[45.90.5.195]: 554 5.7.1 Client host rejected: cannot find 
>your reverse hostname, [45.90.5.195]; 
>from=<[email protected]> to=<[email protected]> 
>proto=ESMTP helo=<list.sys4.de>

Doesn't your ISP mess with DNS, e.g. intercept it?


>I added:
>
>[email protected]       OK
>
>to sender_checks and this seems to have resolved this issue.

I'd advise to add IP 45.90.5.195 to client_checks instead.

...at least according to your previous mail at:

https://marc.info/?l=postfix-users&m=178097029875686&w=2

since seems you missed something in your paste below...

>smtpd_helo_required = yes
>    cidr:/usr/local/etc/postfix/client_checks, check_sender_access
>    hash:/usr/local/etc/postfix/sender_checks, check_sender_access
>    hash:/usr/local/etc/postfix/sender_access, 



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