Wolfgang Jeltsch writes:
Am Samstag, 6. September 2008 03:15 schrieb Jérôme Blion:[…]More over, when using mailing lists, it's a bad idea to reject any mail with a failed SPF check.Why? Sensible mailing list software replaces the Sender: header field so that the sender address uses a domain belonging to the mailing list server. And it’s the Sender: field which should be used for SPF tests (SPF meaning *Sender* Policy Framework).However, I think I’ve heard that Courier also checks the From: field. Is this true?
Yes, but there's a configuration setting that ignores the From: field if MAIL FROM passes SPF. Mailing list traffic will still be accepted, as long as the mailing list's domain has an SPF record that validates the mailing list's return address.
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