ZipGrep is a utility that can list and search zip (.war, .ear, .jar, etc) archives for text patterns, without the need to extract the archive's contents.
One of a set of tools we're offering as a way to say thank you for being a part of the community.
After you change the sendmail.cf all that you need to do is kill and restart sendmail. The easiest way to do this on most Linuxen is to just invoke the system init script with a restart option (or a stop followed by a start if your init script doesn't provide a restart). For instance on RedHat 6.1 I'd do (as root) "/etc/rc.d/init.d/sendmail