topic DMARC error on e-mails. in Email

DMARC error on e-mails.

Robot5 — Wed, 12 Mar 2025 11:07:43 GMT

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

Re: DMARC error on e-mails.

Ady-TalkTalk — Wed, 12 Mar 2025 11:15:30 GMT

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

Re: DMARC error on e-mails.

Robot5 — Wed, 12 Mar 2025 11:32:18 GMT

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

Re: DMARC error on e-mails.

Ady-TalkTalk — Wed, 12 Mar 2025 12:57:16 GMT

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

Re: DMARC error on e-mails.

jbuchanangb — Tue, 18 Mar 2025 11:39:21 GMT

This is probably not being caused by the TalkTalk servers. The recipient's mail server sees your email message coming from the forwarding server, but the originating email address @talktalk.net does not match the domain name of the forwarding server. So the recipient's server rejects it. It happened to me where the recipient was using gmail.com, and the forwarding was via kundenserver.de. The placing of the item in the recipient's spam folder will be a matter for the recipient to whitelist (mark as not-spam) your email address.

Re: DMARC error on e-mails.

Billx — Tue, 18 Mar 2025 12:51:28 GMT

Hi. @jbuchanangb

You say, " The placing of the item in the recipient's spam folder will be a matter for the recipient to whitelist (mark as not-spam) your email address".

I would partly agree.

But, for me, right now, all TalkTalk sending email addresses, forwarded back from Gmail.com to my tiscali.co.uk account, all end up in the spam folder.

'Mark as not spam' simply moves the emails from Spam folder to the correct Inbox folder, nothing more.

I will now go further and use, the 'Allowlist' within the settings of TalkTalk webmail.

Bill

Re: DMARC error on e-mails.

Carlbontoff2 — Sun, 23 Mar 2025 18:01:03 GMT

I am getting the same messages:-

sending domain [TISCALI] does not pass DMARC verification and has a DMARC policy of reject.

So all my emails are being rejected!

This is serious. Can somebody please help?

Thanks.

Clive

Re: DMARC error on e-mails.

Ady-TalkTalk — Mon, 24 Mar 2025 07:18:18 GMT

Hi Clive, please start a new topic so that we can help you.

Ady