After upgrading to version 21 of Fedora OS, I was issued sendmail.cf.rpmnew and submit.cf.rpmnew files. Since sendmail uses .mc files to generate new configuration, I was expecting to receive sendmail.mc.rpmnew instead. Judging from this thread on Redhat, it seems like a long standing issue.
My question is, what can be done after receiving .cf.rpmnew that is different from my existing .cf file?
When yum installs updates sometimes, it will give some message like:
warning: /etc/ssh/sshd_config created as /etc/ssh/sshd_config.rpmnew
My thought is that it would be wise to act upon these because perhaps occasionally there's some tweak to a config file that is important to be performed for security reasons; however, I'm wondering if I'm just being too cautious and that's just a theoretical