<div dir="auto"><div dir="auto"><br></div><div dir="auto">Its a known issue with spf</div><div dir="auto"><br></div><a href="https://help.returnpath.com/hc/en-us/articles/223242468-How-does-email-forwarding-affect-authentication-results-#:~:text=The%20SPF%20authentication%20check%20almost,the%20original%20sender's%20SPF%20record.&text=DKIM%20signatures%20are%20not%20typically%20impacted%20by%20email%20forwarding">https://help.returnpath.com/hc/en-us/articles/223242468-How-does-email-forwarding-affect-authentication-results-#:~:text=The%20SPF%20authentication%20check%20almost,the%20original%20sender's%20SPF%20record.&text=DKIM%20signatures%20are%20not%20typically%20impacted%20by%20email%20forwarding</a>.</div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Sun, Jun 5, 2022, 14:07 Grand Rapids Linux Users Group <<a href="mailto:grlug@grlug.org">grlug@grlug.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">On Sat, 4 Jun 2022, Grand Rapids Linux Users Group wrote:<br>
<br>
> Because blocking unauthorized relays (or at least alerting the receiver<br>
> of mail inbound from them so they can be scored appropriately by<br>
> recipient spam filters) is one of the main purposes for SPF records.<br>
> Warm Regards,Kyle Maas<br>
><br>
THe use case is, vor example, <a href="http://grlug.org" rel="noreferrer noreferrer" target="_blank">grlug.org</a> forwarding email to admin@ to a<br>
member's email @<a href="http://gmail.com" rel="noreferrer noreferrer" target="_blank">gmail.com</a>.<br>
<br>
Gmail is now blocking that forward *unless* the sending MTA does not have<br>
"-all" in that SPF record.<br>
<br>
The main issue, perhaps, is a valid forward of a user email, vs. an<br>
unahthorized relay, which could be SPAM?<br>
<br>
        TFTR!<br>
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</blockquote></div>