I'm of the same opinion as the article, mainly because I want users to get email. I have mine set to 1. IMHO, I wouldn't reject any emails as there are many mis/non configured DNS records.


On 6/17/2018 10:26 AM, Tony White wrote:
Thank you Eric.
I have read this but still would like opinions.

best wishes
   Tony White

On 18/06/2018 01:51, Eric Broch wrote:


    control/spfbehavior

Use this to turn on SPF checking. The default value is 0 (off). You can specify a value between 0 and 6:

        * 0: Never do SPF lookups, don't create Received-SPF headers
        * 1: Only create Received-SPF headers, never block
        * 2: Use temporary errors when you have DNS lookup problems
        * 3: Reject mails when SPF resolves to fail (deny)
        * 4: Reject mails when SPF resolves to softfail
        * 5: Reject mails when SPF resolves to neutral
        * 6: Reject mails when SPF does not resolve to pass

Values bigger than 3 are strongly discouraged, you probably want to go with 2 or 3. Important: This setting can be overridden using the environment variable SPFBEHAVIOR, e.g. from tcpserver rules. Note: If RELAYCLIENT is set, SPF checks won't run at all.(This also includes SMTP-AUTH and similar patches)

On 6/17/2018 9:29 AM, Tony White wrote:
Hi folks,
  Can I get your opinions please?
I am seriously considering making SPF give
hard errors if the SPF record does not indicate
the sender smtp is not allowed to send on behalf
of a domain.

  The question is, is this the right thing to do?

TIA :)


--
Eric Broch
White Horse Technical Consulting (WHTC)


--
Eric Broch
White Horse Technical Consulting (WHTC)

--
Eric Broch
White Horse Technical Consulting (WHTC)

Reply via email to