Problem with emails being returned

[Arandora]

Issue - On a few times now I have had messages to the Help Center of the Tripdvisor Thailand forum returned.. The latest message yesterday has been returned with the following message:-

"This message was created automatically by mail delivery software.

A message that you sent could not be delivered to one or more of its recipients. This is a permanent error. The following address(es) failed:

  sfwebform@tripadvisor.com

    host smtp.google.com [74.125.24.27]

    SMTP error from remote mail server after pipelined end of data:

    550-5.7.26 Unauthenticated email from talktalk.net is not accepted due to

    550-5.7.26 domain's DMARC policy. Please contact the administrator of

    550-5.7.26 talktalk.net domain if this was a legitimate mail. To learn about

    550-5.7.26 the DMARC initiative, go to

    550 5.7.26  https://support.google.com/mail/?p=DmarcRejection 41be03b00d2f7-7a9f621ca6fsi5681596a12.22 - gsmtp "

.

I don't understand the reference to TripAdvisors DMARC policy. This is the only returned mail I have received and the sfwebform,,, email concerned is generated automatically by the TA Help Center system. I am logged into the TA forum and the Help Center with my @talktalk.net Email address.

Any help would be appreciated.

[Ady-TalkTalk]

You're welcome. 

Ady

[Arandora]

I hope so. There has been no repeat since. Thanks for your help.

[Ady-TalkTalk]

Its possible that the mail client just failed to authenticate on this occasion.

Ady

[Arandora]

I don't use webmail I use Outlook 365 desktop and other than this issue I have had no problems sending or replying to the same address but I have sent an Email to TripAdvisor from webmail using the same address without any issue so far. Do you think this is likely to be an isolated case?

[Ady-TalkTalk]

If you go to webmail and send a new mail to the tripadvisor address what happens?

Ady

[Arandora]

Why would these particular emails out of many sent not be authenticated by TalkTalk?

[Ady-TalkTalk · Accepted solution]

Hi Arandora, that suggests that the sender of the mail I.E. you hasn't been authenticated by TalkTalk before sending. We do conform to DMARC so that itself shouldn't be a problem.

Ady