and if im using my isp's mail server, i just put that in as the ip?
hmmmm. my isp wont give me a PTR. so, im kind of screwed...
On Thu, 3 Jun 2004 18:12:53 -0600, Michael R. Brumm
<me(_at_)michaelbrumm(_dot_)com> wrote:
Why not use "v=spfv1 a:lotas-smartman.net ?ip4:81.98.88.0/21 -all"?
This would make any mail from your IP an SPF pass, any mail from NTL's Dublin
pool "neutral" (same as having no SPF record) and any mail from elsewhere a
"fail". The IP range should only come into play in the 5 minutes or so after
your IP addresses changes, as that is the TTL of the DNS A record for
lotas-smartman.net.
The "neutral" result is not a long-term solution. Sure it works fine now
(when no one is rejecting neutrals), but (in the future) everyone will set
their MTAs to reject everything except "pass".
Michael R. Brumm
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