CentOS - May 2012 - Reject Action For SPF

Dear Friends,

i have setup SPF alright, postfix is performing check as well (results
below), but even if there is no SPF record exist for a domain, message is
still accepted.

how can i set the reject action, if no SPF available.

May  3 16:11:14 titan postfix/policy-spf[5353]: : SPF none (No applicable
sender policy available): Envelope-from: somedomain.com

Prabh S. Mavi

Hi Prabh, 
> i have setup SPF alright, postfix is performing check as well (results
> below), but even if there is no SPF record exist for a domain, message is
> still accepted.
> 
> how can i set the reject action, if no SPF available.
are you sure you want to do this? It will definitely result in lots of
legitimate mail being blocked, because SPF is by no means ubiquitous.

You can set up your mail server to block mail if the SPF record suggests it, but
I would never filter mail originating from domains having no SPF record at all.

Best regards, 

  Peter.