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Re: dynamic DNS and SPF?

2004-06-03 07:21:50
ok. thanks for that. ill try that out now. is there somewhere i can
test this though? like send an email and get a reply saying fail or
pass or what have you?
Lotas Smartman, MCP
www.lotas-smartman.net
www.the-hairy-one.com
www.lsn-blog.tk

On Thu, 03 Jun 2004 14:57:12 +0100, Paul Howarth <paul(_at_)city-fan(_dot_)org> 
wrote:

Lotas Smartman wrote:
thanks for the info. ntl.lotas-smartman.net is automaticly updated
when the address changes, so that could work. so that "v=spfv1
ip4:81.98.88.0/24 -all" is all i should put in, yea? and how would i
go about adding a second set of ips? add a second ip4:whatever?

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.

Regards, Paul.



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