About six months ago, I decided it would be best to put my website on the naked domain, let's just say 'example.com'. I did what all the instructions websites have told me with adding a 301 redirect from www.example.com to example.com.
Now I wish to undue using the naked domain and establish my website under www.example.com. After reading various questions both on this site and sites like yes-www.org, I realized that I will be better off in the long term using 'www.' for my main website. This is especially true now, since the website is growing larger and must be splintered into separate sites (e.g. news.example.com, research.example.com, community.example.com, etc.). With the new domain structure, the main content should be listed on www.example.com.
The problem is, removing the old 301 redirect for www.example.com to example.com and adding one from example.com to www.example.com will result in an infinite loop of redirects for those who still have the site in their cache!
Sadly, this is a large site, with tens of thousands of viewers per day and cannot be undone in an automated fashion.
The only thing I can think of doing, is setting up my main website on a domain, "www1.example.com," doing a redirect from example.com to www1.example.com, and somehow, in time, migrate back to www.example.com? How could I do this, though if redirects really do seem permanent?
In summary, I wish to find an automated way to go back to using www.example.com instead of the naked domain, example.com, and I really don't know how this will be possible to do again.