Thanks - I've done that.
Details say
| Direction: |
Inbound |
| Sender'IP Address: |
|
| FROM Header: |
yyyy@skixxxx.co.uk |
| Envelope MAIL FROM: |
|
And analysis says
| PTR record: |
|
|
| HELO host: |
|
|
| SSL/TLS used: |
|
No |
| Envelope SMTP FROM matches From Header: |
|
No. Check this page to learn the differences |
| Reply-To matches: |
|
Yes |
| SPF results: |
|
Not applicable |
| DKIM signature: |
|
Signature verified |
| DMARC published: |
|
Domain does not publish DMARC |
Does any of this explain why its going through the outbound queue.
