Is it possible to configure PMG's SPF to validate the Mail From of data section instead of using EHLO's Mail From the same way Exchange does?
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SPF mailfrom on data Section
- Thread starter kleber.unixer
- Start date
SPF is meant to validate envelope senders (MAIL FROM addresses) :
https://en.wikipedia.org/wiki/Sender_Policy_Framework
Not quite sure what Exchange does in these cases?