Can’t remove index.php from URL

I am running Apache 2.2.3, and have enabled mod-rewrite through the httpd.conf file. I want to remove the “index.php” from my URLs, so I edited the permalinks so they are in the date and name format (/%year%/%monthnum%/%day%/%postname%/). However, now all links to posts and pages are broken even though they link the way specified in the permalinks page. If I enter the url to contain [domain]/index.php/%year%/%monthnum%/%day%/%postname%/ then that will work.