This has never worked since we got the box, and the manual is somewhat confusing. I can only assume I am not setting this up correctly. Perhaps someone can explain *simply* what I need to do.

We have our own domain name (ourdomain.co.uk) and each of the users has his own ISP and email address, such as fred@smith.free-online.co.uk, the ISP domain there being free-online.co.uk. Each user has been allocated an email address using our own domain name, such as fred.smith@ourdomain.co.uk.

The problem is that they cannot send email using this email address to anyone other than other users within our domain.

POP Authenticated Relaying is enabled in Server Management -> Network services -> Email -> Advanced.

What else needs to be entered and where.

Thanks for any help forthcoming.

Bob