Question How to reject domains with several SPF records

Hello everyone

I'm using Plesk Obsidian Version 18.0.38 Update #3 with SPF checking enabled.

I just received a maliciuos email from a domain that has 2 SPF records. Having 2 SPF records is invalid, just like having a long one, but the message got authenticated and made it through.

How can i set up the mail server to reject domains with these kind on misconfigurations?

Regards
 
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