What is the proper method to do 301 redirect to a new domain

What is the proper method to do 301 redirect to a new domain
I have redirected two expired relevant domains to my money site. The 301 redirects that i have applied are from the domain dashboard(web forwarder). I am not hosting the domains. The redirect i applied is like this:
++++++++++++++
list of top cheapest host http://Listfreetop.pw

Top 200 best traffic exchange sites http://Listfreetop.pw

free link exchange sites list http://Listfreetop.pw
list of top ptc sites
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Listfreetop.pw
Listfreetop.pw
+++++++++++++++
www.exp-domain.com >> www.domain.com

Now the problem is :
If The try to open any internal link of the expired domain(www.exp-domain.com/xyz)..it opens (www.domain.com/xyz) and shows a 404 in the money site. I want all internal pages to rediect to the home page of money site.

How can i achieve that? I am not hosting these domains .I have just applied forward from the domain dashboard. Please advice
create links , find the links to create from ahrefs , run a small script to create those links n the directory structure
. htaccess
handle 404 on the new domain
create links , find the links to create from ahrefs , run a small script to create those links n the directory structure
Will redirecting all 404s to Homepage of the new domain resolve the problem?
I cant use .htaccess because the expired domain is not hosted anywhere. I have just applied a 301 redirect from the domain dashboard of the domain registar
it should but honestly i would do it a different way ( as explained )
others with more knowledge can tell you .
i would make sure all old links still work
and 404 to homepage as a backup
Not sure if this is what you mean but when I changed domains I just redirected pages to the homepage, and from the homepage I redirected to the new website domain.

Let me know if this is what you mean.
it should but honestly i would do it a different way ( as explained )
others with more knowledge can tell you .
i would make sure all old links still work
Can you explain what your approach should be?
1: redirect all internal links of the expired domain to the expired domains home page
2: then 301 redirect the expired domain to the main website.
3: Redirect all 404s of the main website to its homepage.

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Is this method correct?
Not sure if this is what you mean but when I changed domains I just redirected pages to the homepage, and from the homepage I redirected to the new website domain.

Let me know if this is what you mean.
You mean to say, first you redirect all internal pages of that expired domain to its home page, then apply 301 redirect to the money site...Am i correct here?
Can you explain what your approach should be?
1: redirect all internal links of the expired domain to the expired domains home page
2: then 301 redirect the expired domain to the main website.
3: Redirect all 404s of the main website to its homepage.

Is this method correct?
You're correct. It didn't seem to affect the websites SEO, but I would hate to see your SEO affected by this so you might want to wait for a different answer.