???? ?????:
> Hello Guys,
> 
> I'm trying to set up some restrictions in 'smtpd_client_restrictions'
> Postfix config block. You can see my 'smtpd_client_restrictions' block
> bellow:
> 
> smtpd_client_restrictions =
>                             permit_mynetworks,
>                             check_client_access hash:/etc/postfix/access
>                             reject_unknown_client_hostname,
>                             reject_unauth_destination,
>                             reject_invalid_hostname,
>                             reject_unauth_pipelining,reject_non_fqdn_sender,
>                             reject_unknown_recipient_domain,
>                             reject_unverified_recipient
>                             permit
> 
> I put 'check_client_access' rule in oreder to whitelist some type of
> senders that have a specific domain part in the envelop-from header but
> doesn't have correct PTR/A DNS records.
> 
> /etc/postfix/access:
> 
> yahoo.com        OK

For security reasons Postfix does not allow you to whitelist a
client hostname with incorrect PTR/A DNS records. Not even when you
use check_reverse_client_hostname_access instead of check_client_access.
If you must whitelist, use the IP address.

        Wietse

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