Postfix version 3.1.1 Hello List!
We have a customer that occasionally receives messages like this... Return-Path: <to...@external-domain.tld> From: "Free iPad <jsm...@mydomain.tld>" <to...@external-domain.tld> To: <us...@mydomain.tld> Subject:Free iPad >From the looks of it, messages like these are from legit domains with a >carefully crafted "displayName". So the "displayName" is "Free iPad <jsm...@mydomain.tld>", and the "true" sender is to...@external-domain.tld. We were thinking using a header_check rule, something like this; but didn't work due to the "backtracking limit exceeded" warning. /^From:(.*)*\<*@*\> \<*@*\>/ REJECT #Sorry, we do not allow emails with multiple FROM senders Is it possible to use header_check feature to reject messages with carefully crafted displayName? Any suggestions welcome! Thank you! Best Regards, -- Rick King
