Hello i use dmarc and have it in use, love the reports on spoofing we get I have had this issue twice now, once on a microsoft system months ago - use the powerdns.net webform, and this which is reported by a user
So the user used a web form, entered his email address into the form and pressed send but the remote system did not like our dmarc record as that is the logical thing being we dont host with the people whom where being contacted <[email protected]>: host mx101.skynet.be[195.238.22.25] said: 550 #5.7.1 DMARC unauthenticated mail is prohibited. (in reply to end of DATA command) --/hermes-outmx02.proxi.technology Content-Description: Delivery report Content-Type: message/delivery-status Reporting-MTA: dns; hermes-outmx02.proxi.technology X-Postfix-Queue-ID: 141BB4A4041 X-Postfix-Sender: rfc822; our [email protected] Arrival-Date: Wed, 28 Oct 2015 16:32:22 +0100 (CET) Final-Recipient: rfc822; [email protected] Original-Recipient: rfc822;[email protected] Action: failed Status: 5.0.0 Remote-MTA: dns; mx101.skynet.be Diagnostic-Code: smtp; 550 #5.7.1 DMARC unauthenticated mail is prohibited. Is there anything i can do without removing dmarc to idiot proof dumb web forms not in my control ? Our user emailed them ok. So the records do work Clues most welcome, or is this a somebody else's problem S West
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