Q: Why page from one domain is crawled under different domain name? I have 2 websites i.e. www.sample1.com and www.sample2.com. I have an item id i.e. 1. This item 1 has a property called channel and actually belongs to www.sample2.com. But inside www.sample1.com, I have a logic to check if the requested item (in this case, item 1) has channel=sample2. If so, then I am redirecting it to www.sample2.com.    
My problem is: even though item 1 belongs to www.sample2.com, it is crawled under www.sample1.com by google crawler. Any idea on how could I fix this?
Update 1
Both www.sample1.com & www.sample2.com share the same database. 
Update 2
One solution I can think of is returning 404 or something relevant when item 1 is searched on www.sample1.com so that google will ultimately drop the page from www.sample1.com. But still, I do not understand why the page is rendered under www.sample1.com.

A: Just check your redirection of that page when you open that page you will redirect to other channel then you have to fix it and don't panic about google result google also display old link in webmaster error just select and resolve error in webmaster day bay day your error is going to low if error is resolve. 

A: Check with the SSL certificate.Check whether your site is matched with ssl certificate.

A: I agree with Ketan. Check whether the pages are redirecting properly. If everything is set up properly at your end, the reason you are facing the problem is Google has not yet cached and/or indexed your these pages recently. For this, you need to submit the crawl request to Google through Google Webmasters. I suggest to keep continue checking and monitoring the stats of Crawl Errors under Webmasters.
Once Google will cache your updated site, the issue will get resolved. The other thing you can do is go to Google URL removal request from its index and submit those pages which have been redirected from one site to another to delete the indexed pages from first website. This will help you out to de-index old pages from the first website quickly. Hope you get the point. Let me know if I can be of more help to you.
