One of our clients is trying to forward b@domain.com to a@domain.com, and there are no copy left in b@domain.com. However he also want to send email with b@domain.com rather than a@domain.com.

Is there any way to setup a SMTP account for b@domain.com with no POP account.

So far we setup a forwarder from b@domain.com to b@domain.com.

If we setup a POP/SMTP for b@domain.com, all forwarded email is also kept a copy in b@domain.com POP account.

Thanks.