What is the fastest way disassociate an old URL with a new domain name?

[mgordon]

We have a client with an old domain which was spammy (bad links).  Until two months ago, it was forwarding to his current domain and (I believe) causing a penalty.

Two months ago we transferred ownership of the spammy URL to a third party and setup an unrelated blog for Google to pick up on.  Google did pick up on the URL.

After two months Google Webmaster Tools is still showing 200 links from the old domain, to the new domain (from the spammy domain).  Also, when you search the company name, the spammy domain still appears in the results (page two).

Is there a faster way disassociate the old domain entirely from the business?  I.e., just delete the domain, forward the domain to another website, etc.?

If you have experience in this, I'd love to hear from you.

Thanks!

[JordanLowry]

First I think it will take time for Google to completely disassociate the old domain from the new domain. With that being said have you tried to disavow all the spammy backlinks on the old domain? You could also meta no index the entire site and get it

You could also either meta no index the entire site and get it de index from Google or block it from being crawled within its robots.txt file. That is probably the closest you could come to deleting the domain.

I hope that helps some.