If the domain has strict identity alignment set up, then From: body must match MAIL FROM, which must match the SPF record. Thats why you need to replace or encapsulate the From: aswell, incase the sender domain has strict identity aligment set up.

-----Ursprungligt meddelande----- From: Benny Pedersen
Sent: Thursday, September 17, 2015 11:26 PM
To: postfix-users@postfix.org
Subject: Re: Forward rejected by yahoo

Sebastian Nielsen skrev den 2015-09-17 19:51:

Then you host a own SPF record.

no no no no and no

SPF is not From: body header

do you think about SenderID ?

sid-milter test both, SenderID is depricated with a replacement of DKIM

Attachment: smime.p7s
Description: S/MIME Cryptographic Signature

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