Finding errors in a postfix log file is tedious work. The job gets even more complicated if you have to dig through old postfix log files which might no longer be relevant. logrotate comes to the rescue, but only if you configure it correctly. Here is how you can do it on Fedora.
Have you ever seen one of these weird redirects? WordPress, for example, may refuse to show the log-in page, leaving you out of its admin interface for good. Here is what to do about it.