Re: [spfbis] WGLC: draft-ietf-spfbis-4408bis-14

["John Levine" <[e-mail]>]

>>    Checking "HELO" promotes consistency of results and can reduce DNS
>> resource usage.
>> 
>> I understand the consistency, but how does doing two lookups rather
>> than one reduce DNS resource usage?  Suggest just removing the second
>> clause.
>
>Generally, the SPF record for HELO requires at most one additional DNS lookup, 
>so even if you have a relatively low rejection rate base on these records, you 
>can come out ahead on resource expenditure because it's generally an 
>inexpensive check compared to Mail From records.

Well, maybe.  If someone says "HELO hotmail.com" as some spamware has
been known to do, you're going to do a lot of extra work before you
look at the Mail From.

>We have been through what goes in the main body and what goes into an appendix 
>several times and finally got to something people are roughly happy with.  I 
>would propose not having the 4408bis organization discussion again.  If people 
>are really unhappy with the organization, I have several comments against it 
>as well that I'll submit, but I think that we're better off to leave well 
>enough alone.

If moving this stuff requires a lot of argument, I agree it's not worth it.

>I found one oddity in the XML.  The output now looks like: ...

>Is that more like what you were expecting?

Yup.

R's,
John