I've had my hotmail.co.uk address for years, until very recently a proxy address I have got set up delivered mail into my account, now there is nothing.

Forgive my lack of knowledge on this issue, but as far as I'm aware there is no email server that mail for my other address gets sent to or stored. Only a server that will redirect anything coming to that address to my hotmail address.

As such I cannot set up an alias as I don't have / use a password for this proxy address. How / why is this happening and how do I get it resolved? No changes have been made at the proxy server end, and when extra addresses are added to the proxy address, they get the mail yet I still don't.