SES Mail configuration fails on outgoing address

I have setup and used SES previously but had to change the domain and somehow in the new setup I am missing where to force the outbound email address to be consistently what I want it to be! As a result SES rejects sending any emails stating the address is not verified and it looks to be sending from something like this -
Reason: 554 Message rejected: Email address is not verified.

Cannot post my config here because the forum thinks I am posting links which I am not and doesn’t allow me!

I had to complete the config for reply emails in Settings - Emails. Didn’t realise it was mandatory to set this for just sending emails out but this solved the issue!