automatic email forward from my own gmail email address error message

[Tony8888]

I receive the following message when automatic forwarding emails from my gmail account to my Sky account:

Your message has been blocked. See technical details below for more information. The response from the remote server was:

This mail has been blocked because the sender is unauthenticated. Yahoo requires all senders to authenticate with either SPF or DKIM.

[Mark39]

You can google SPF and DKIM for details - as I understand it, they're 'filters' put in place by the receiving email service to verify that the email is coming from an authorised source. I don't think there's anything you can do to influence the filtering.

Does the same thing happen if you manually forward them?

[Tony8888]

Thanks for the reply Mark. No, it doesn't happen when I forward it manually.

[Mark39]

Annoyingly that looks like the solution, then, I'm afraid, 

[TomGavin]

Hi, Today I received from Sky a letter stating my account has a outstanding amount of €44.83

i closed my account some time ago.

I have now logged onto my Sky account. It shows the three periods PREVIOUS BILLS, LATEST BILLS and FUTURE BILLS. All three display a €0.00 balance. Can someone please explain where the €44.83 is coming from?

Regards, Tom 

[caesarome]

If you Google this:

---

@Tony8888 wrote:

This mail has been blocked because the sender is unauthenticated. Yahoo requires all senders to authenticate with either SPF or DKIM.

---

The very first result is from folks who are having the same issue with their Yahoo mail account so it seems a commin issue that is widespread at present so it might be sonething that Yahoo needs to look into.

[TomGavin]

Hi, can someone please tell me how to authenticate my message?

[Mark39]

You'll have to clarify the context, I'm afraid. What are you trying to do?