RADiSTAR said:
On Sedo's part, it's only a matter of using wildcards in their DNS. I am not sure why they don't do it. But as pelican said, you need to set up your own DNS catching the subdomain traffic and then redirect to Sedo.
If your domain is registered with the likes of enom you can park the domain on enoms nameservers and control the DNS from their by pointing the * @ and www hosts to SEDOPARKING.COM's IP address (212.227.34.3).. this has a huge bonus because you can still operate and receive emails for a parked domain.
If anyone needs assistance with this let me know. It should also be know that Enom will even update all the records for you if you give them a sample domain to follow, I even got them to automatically apply email settings to all my domain names. It took them a couple of days to do over 3800 domains saved me doing the update one at a time.
If you need a free enom account let me know....
I tried the same at fabulous but they are not as flexible as the team at the SEDOPLEX