Re: Toss load-balancer health checks, but BCC everything else (always_bcc, check_sender_access and 'smtpd_delay_reject = yes')

[Wietse Venema]

deoren:
> My apologies if I overlooked an answer somewhere, but I checked the docs 
> and performed a brief search of the archives before asking and didn't 
> spot the answer.
> 
> Goal:
> 
> BCC everything EXCEPT for health check emails generated by our HAProxy 
> load-balancer

Use a CIDR map:

/etc/postfix/main.cf
    smtpd_client_restritions = 
        check_client_access cidr:/etc/postfix/client-access.cidr

etc/postfix/client-access.cidr:
    # First, a rule that matches healtcheck mail.
    1.2.3.4/32 DUNNO
    # Add a BCC recipient to other email.
    0.0.0.0/0 BCC f...@example.com

This requires Postfix 3.0 or later.

        Wietse