A. Use a valid domain mapped to an unroutable or loopback instead of the .
I've decided to use 127.0.0.1
B. Set spf -all, for those who bother to check that to stop inbound mail from
your domain.
Already had that in place
C. Donate the spam to someone who would use it.
I can't donate the existing
On Tue, 15 Dec 2009 11:51:29 -0600, Eric J Esslinger wrote:
B. Set spf -all, for those who bother to check that to stop inbound
mail from your domain.
You might as well also add a DKIM ADSP policy with dkim=discardable.
Similar to your SPF policy, it announces that no unsigned mail (or
no mail
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