Welcome to the Q&A Forum

Sorry doesn't look to have that feature, i don't tend to use it for that but moth majestic and ahrefs do.

If you have the ability to remove the bad links, then this is always the better option.  It's a bit of a pain and can take some time but removing is always better than disavowing. Feel free to send me an email at marie@hiswebmarketing.com and I'll put you in touch with someone who can give you a good idea as to whether or not your site is a good candidate for recovery.

Sorry to hear it. Been there, and had to deal with it also! Read this over to help you understand the best practice. It's a great learning piece that will help going forward SEO Redirection practices and the SEO guide to HTTP status Codes by Dr. Pete. Another great piece and article. It sounds like the a 302 temporary redirect is the best practice if you are only redirecting the site for 4-5 days. Then you can remove the redirect after the site is back up after the DNS failure taking place. Cheers!

I agree that you shouldn't try to get search pages indexed. Google loves clean URL's and "?course=starter" is not really a clean URL. One of the reasons why Google doesn't like this is because it's not good for the user experience. Nobody is gonna remember a url with ? and = in it. My recommendation would definitely be to change the structure of the website that every recipe has it's own page and that these recipes are sorted into categories. Then you can still use the search function so that people will be able to search and they will find their recipes. Trying to get these pages higher in Google may help in some ways, but i think it will serve you better to focus on getting pages with a clean URL structure higher in Google.This should also improve your CTR (Click Through Rate) because people trust websites more if they understand the URL. About the duplicate content issues. Search pages are not really meant to be indexed by search engines in my experience. I always no-index the search pages because of the possible duplicate content issues and they are custom pages which appear bases on what a user does. Not something i would want to get found on in the search engines. I hope I helped, if anything is unclear or you need more advice or have a different question than please let me know.