When I try to delete https://www.example.com in SiteExplorer it then wants to delete all of my site, ie all of the pages that use http as well as the https://www.example.com index.

As a result of this Yahoo seems to be applying a dupe penalty and my site, which used to be at #1 is now around #50 for the main target keyword term.

Is there a simple 301 redirect solution that will sort this out without harming my ranking elsewhere, I'm #2 on Google for this term, or am I better off allowing Yahoo to wither on the vine?"

"I've had this exact same problem for over a year, I've also got a robot text file on my Https site that denies indexing yet Yahoo still indexes the https as a sub-domain.
As for a redirect i have a server wide 301 redirect from non www to www for years now and still Yahoo indexes some of my url's with the non www prefix. Yahoo's capability of displaying and following 301 redirects is very poor in my experience and they seem to display url's from links rather than what the server is telling the Bot to do.
try and locate the offending page that links in to the https site is the only solution that i can suggest.
I'd greatly appreciate any help if anyone else has some detailed information on how to remove these as Yahoo has a strong following still in some parts of the world."

"There's a related thread in the Google Search forum right now, with a good approach that would work for all search engines. It's not just Yahoo that treats different protocols as different URLs when they both resolve.