I created a site and added a mailing list to it. When removing the site, i found leftovers from the mailing list entries inside /etc/aliases , I found this out because when i re-created the site once more, it would not allow me to add an e-mail alias with the same name as the mailing list i had once created, and thought i had deleted.
Is it safe to remove these entries from /etc/aliases? and could there be other places which might contain left overs from that mailing list? I wan't to keep the system as clean as possible.