On Sat, November 17, 2018 12:01 am, Wietse Venema wrote:

thanks !

>> or where ? to reject/block ?
>
> /etc/postfix/sender_pcre:
> /@.*@/       reject
>
>
> /etc/postfix/main.cf:
> smtpd_sender_restrictions = check_sender_access
> pcre:/etc/postfix/sender_pcre

I currently have as so, add as 1st or last ?

...
smtpd_sender_restrictions =
 permit_mynetworks,
 permit_sasl_authenticated
...


> Don't use this in header_checks.



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