I added that I can sent test messages via the same relay and they are delivered successfully
-----Original Message----- From: Matus UHLAR - fantomas via Postfix-users <postfix-users@postfix.org> Sent: Monday, July 24, 2023 12:09 PM To: postfix-users@postfix.org Subject: [pfx] Re: messages passing DMARC are being rejected as failing CAUTION: This email was sent from an external sender. Do not click links or open attachments unless you recognize the sender and know the content is safe. On 24.07.23 16:03, Gomes, Rich via Postfix-users wrote: >Clarification below: I see no clarification, just added disclaimer. It says nothing about DMARC, just that the mail was sent from external organization. >From: Gomes, Rich via Postfix-users <postfix-users@postfix.org> >Sent: Monday, July 24, 2023 11:27 AM >To: postfix-users@postfix.org >Subject: [pfx] messages passing DMARC are being rejected as failing > >CAUTION: This email was sent from an external sender. Do not click links or >open attachments unless you recognize the sender and know the content is safe. >Asking the hive mind to see if anyone has seen this behavior. > >Application server sends reservation emails to postfix server running >OpenDKIM, postfix sends directly to O365. >Our DMARC policy is in REJECT mode. >Messages are signed and the NAT is in our SPF record. Message headers state >that the messages are passing DMARC, yet Gmail and Comcast are rejecting them >stating they are failing DMARC. > >I can send test emails using swaks on the postfix server to replicate >the same pathway as the application server sending emails and these emails are >delivered successfully Comcast tech support has no idea where to even route my >call and I haven't tried to engage with Gmail yet. > > >Has anyone see this specific behavior from Comcast and Gmail? -- Matus UHLAR - fantomas, uh...@fantomas.sk ; http://www.fantomas.sk/ Warning: I wish NOT to receive e-mail advertising to this address. Varovanie: na tuto adresu chcem NEDOSTAVAT akukolvek reklamnu postu. WinError #98652: Operation completed successfully. _______________________________________________ Postfix-users mailing list -- postfix-users@postfix.org To unsubscribe send an email to postfix-users-le...@postfix.org _______________________________________________ Postfix-users mailing list -- postfix-users@postfix.org To unsubscribe send an email to postfix-users-le...@postfix.org
