Moving to a new domain name.

Is 301 the only alternative?

[samseo]

We have been building links for the last 8 months or so for a site and have started seeing some natural traffic only recently. For some legal reason we have to give up that domain and are setting up the same site on a brand new site.

Whats the best way to leverage all the efforts that we have put in? How can we ensure that we do not lose all the hard work put in for the last so many months? Is there any way we can get the same traffic without waiting another so many months.

Is 301 the only way out? If so - what can we expect in the immediate and the near future?

Help appreciated!