This is a BT retail customer to customer forum. It has nothing to do with Openreach which is a separate company within the BT Group.
It is not possible to say or not whether the email is a scam without knowing the full content of the email and what it was asking you to do if anything.
You would need to check with Openreach to ascertain if it is a scam or not however the email address that you have posted appears to be genuine and as it is a no reply email address it can not be replied to so there would be no gain for any scammer.
Do not click on or reply to any links in any email that you suspect is a scam.
Crimes and scams | Openreach
