DMARC error on e-mails.

[Robot5]

Hi Talktalk

I am now getting a problem sending e-mails via webmail. These e-mails are being rejected by the remote mail server as failing the DMARC validation. It says the talktalk domain TALKTALK.NET does not pass DMARC verification and is rejected.

The e-mail is routed via another domain and then sent to the final destination. I have tried to send direct to see what happens then and it just puts it in the recipients spam folder, not in their mail- in box.

I believe that this DMARC process needs the sending server i.e. Talktalk.net in this case, to enable a digital signature on each e-mail so that it can be validated at the distant end as a genuine source and not phishing e-mails.

Is this something that is being addressed by Talktalk Please.

I can send you a PM of the error message if you tell me how to progress it please.

Kind regards

Robot5

[Ady-TalkTalk]

OpenXchange along with TalkTalk security have made the changes to prevent TalkTalk servers being used by non authenticated users to avoid the servers being misused. 

Ady

[Robot5]

Hi Ady-Talktalk

Thank you for your reply.

Could you please explain why this happens now and did not last year ?

As I mentioned if I send direct it goes into the receipient spam folder not the In box.

I believe this is because TALKTALK.NET fails DMARC, if it is received via forwarded box then it fails and is rejected, if it is sent direct it is just put in the spam folder for the recipient to check.

So is this being DMARC problem addressed by Talktalk please ?

Kind regards

Rotot5

[Ady-TalkTalk]

Hi Robot5, if you mail forward it will fail DMARK. If you send direct from webmail to the end mailbox and you get the DMARK message please let me know. 

Ady