The  SPF check should probably be on the “envelope sender address” from the SMTP dialog.  This is what usually shows in the mail logs of sendmail or postfix---e.g. it might be from [log in to unmask] in the logs, while the user sees the original sender in the From: display of his mail client.

 

You are correct that unhappiness will ensue if we try matching the From: line and the SPF record/IP address, but it applies to more situations than a mailing list.

 

 

 

Thank you for your reply.

 

I noticed the "Sender" heading containing the list address but this is really not what I need. I am facing problems with anti-spam techniques checking whether the domain in the "From:" address matches the sending mail server. Since Listserv resends the message while retaining the original "From:" header, this creates a mismatch.

I reckon this could be solved if the "From:" address is modified to the list address.

 

Regards,

Lucas