Outlook 2007-Cannot send emails to Yahoo account holders

[Jay]

Hi there!

I'm having problems sending emails to people who hold yahoo accounts.
I've got a couple of accounts set up on Outlook 2007 (personal & business)
and I have the same trouble when trying to send to yahoo from either of them.
I can receive emails from yahoo accounts no problem.

Any suggestions please?

Many thanks for your time.

Jason

 

[K. Orland]

Are there any error messages which might hold the key to troubleshooting
this issue?

 

[Jay]

No, there are no error messages.
I just get this basic delivery failed message for each friend I try sending
to that has a yahoo.com/co.uk email address: -

This is an automatically generated Delivery Status Notification.
Delivery to the following recipients failed.

This has been happening for months now, but I've only just got round to
trying to solve the issue.

 

[K. Orland]

There should be some sort of error number, like 5.7.1 or similar in that
non-delivery message?