Spam signals from old company site are hurting new company site, but we can't undo the redirect.

[FPD_NYC]

My client was forced to change its domain name last year (long story). We were largely able to regain our organic rankings via 301-redirects.

Recently, the rankings for the new domain have begun to plummet. Nothing specific took place that could have caused any ranking declines on the new site.

However, when we analyze links to the OLD site, we are seeing a lot of link spam being built to that old domain over recent weeks and months. We have no idea where these are coming from but they appear to be negatively impacting our new site.

We cannot dismantle the redirects as the old site has hundreds, if not thousands, of quality links pointing to it, and many customers are accustomed to going to that home page. So those redirects need to stay in place.

We have already disavowed all the spam we have found on the old Search Console. We are continuing to do so as we find new spam links. But what are we supposed to do about this spam negatively impacting our new site?

FYI we have not received any messages in the search console.

[VeroBrain]

Hi,

It is hard to advice if not having all detailed facts.
Said this. What about sending those affected pages with a 301 to a new page "site.com/redirect" with a noindex.nofollow? That way, you "tell the crawlers" those spam are not important nor relevant to your website.

I implemented twice already; so far so good. The websites have recovered SERPs positions almost instantly, as well as the DA has slowly improved.

Some complete redirects from http to https, or to a new domain have unexpected "secondary effects".

Although, I noticed that only the Moz Link Research & Back Link Checker have noticed and showed the spam links.

Despite Google almost ban the website, vanished from all SERPs, the console never showed the issues at all! Please, update whenever you have news.

Mª Verónica B.