URL casing structure in our sitemap is example.com/Abc-My-Page.htm We have used rel=canonical tag on example.com/Abc-My-Page.htm (rel=canonical example.com/Abc-My-Page.htm) But when we manually type the URL in browser example.com/abc-my-page.htm it also opens (rel=canonical example.com/abc-my-page.htm, this we did not created but can be seen on this page) Though there is no link from our website that points to example.com/abc-my-page.htm Now the question 1) Is this an issue of duplicate content/canonical?
It appears that the search engines can figure it out, but it is a good idea to not leave it up to them to figure out. I would correct the issue and not allow different case URLs to both resolve. http://www.seroundtable.com/archives/019577.html I could not find a definitive answer about if it would be considered duplicate content or not. I think the search engines would not consider it duplicate, but I would fix it so you do not run that chance.