On 18/02/2020 09:03, Benoit Panizzon via mailop wrote:
SPF would block the From email addresses if also used as envelope
sender. But the, from the customers perspective 'hidden' envelope
sender is different and does match SPF.
Has anyone come up with a clever recipe for this issue?
This is one thing that DMARC is intended to solve. DMARC checks the
header 'From' address matches either the DKIM signature domain or the
SPF domain.
--
Paul Smith Computer Services
Tel: 01484 855800
Vat No: GB 685 6987 53
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