No not rewrite subdomains

[alhermette]

I have the following in my .htaccess file

# Force www
RewriteCond %{HTTP_HOST} !^(www\.example\.com)?$
RewriteRule (.*) http://www.example.com/$1 [R=301,L]

It was put there for SEO reasons to ensure that traffic to http://example.com was redirected to the www. address consistently.

I am now developing a subdomain and of course when I type in subdomain.example.com it helpfully directs me to www.example.com.

Can somebody help me get the syntax right so that only requests to http://example.com are redirected to www.example.com and not any other subdomains.

[incrediBILL]

I would think changing from
RewriteCond %{HTTP_HOST} !^(www\.example\.com)?$
to
RewriteCond %{HTTP_HOST} ^(example\.com)?$
Would do the trick

[alhermette]

Thank you, that did the trick.

[lucy24]

Most specific to most general. Start with anything that applies to the subdomain, get it out of the way and then carry on as usual with the primary domain.

What if your requested host is example.com:80 or the like?

[g1smd]

There was a reason that the pattern was !^(www\.example\.com)?$ which is now negated by using something else.

Use this:

RewriteCond %{HTTP_HOST} !^(www\.example\.com)?$
RewriteCond %{HTTP_HOST} !^subdomain\.
RewriteRule (.*) http://www.example.com/$1 [R=301,L]