Re: [courier-users] How did this pass SPF?

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Ben Kennedy writes:

> [originally replied to Sam only, by error]
>
> Sam Varshavchik wrote at 11:47 PM (-0400) on 4/28/08:
>
>>No, BOFHSPFMAILFROM checks the SMTP MAIL FROM command. BOFHSPFFROM checks
>>the From: field. The courier man page makes this distinction clear:
>
> Durrrh... my brain was not functioning last night, and kept thinking of
> "MAILFROM" as meaning "mail From:" rather than "MAIL FROM". Sorry for
> the noise.
>
> On that note though, interesting there was no SPF=FROM header in the
> message, which obviously would have failed.

An absence of a From: header will not cause an error, only a present From:
header that fails the SPF check. Keep in mind that SPF's purpose is to
prevent header forgeries.


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