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Re: [spf-discuss] should SPF checks be before or after RBL

2006-10-03 10:15:48
On Tue, Oct 03, 2006 at 09:03:49PM +0530, Ramprasad wrote:
On Tue, 2006-10-03 at 14:35 +0200, Daniel Wiberg wrote:
On Tue, Oct 03, 2006 at 05:54:22PM +0530, Ramprasad wrote:
Hi,
  I am using postfix with rbls ( spamhaus , dsbl etc )
I have added SPF checks using policyd-spf-perl

Now which is the best place to do the spf checks. Should it be before
RBL checks or after. How do you folks configure them ? 


After RBL checks, what is the point in doing SPF checks if you are going to
block the email anyway?


So a SPF lookup is heavier than a rbl lookup ?

Yes, most likely. But it also depends on your actions based on RBL/SPF
lookups. Do you accept mail if SPF fails? Do you accept mail if RBL fails?

For example, I reject mail if RBL fails, but only tag mail if with SPF
results, therefore it means less load to have RBL first.

//daniel wiberg

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