Setting a Preferred Domain

[HMCOE]

Should you set a preferred domain?

www.domain.com

or

domain.com

Does this influence your SEO strategy?

[irvingw]

I prefer www but either way is not a problem as long as you are 301 redirecting the one to the other and your internal linking does it the same way.

Also external links pointing to you should be coded correctly too, since most people use www that would be another good reason to go with www.

[KeriMorgret]

Good answer here from Irving. You want to make sure your server is set up correctly, and then also specify your preferred domain in Google Webmaster Tools.