Postfix - read only filesystem?
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Using 2.1-RELEASE. Added a package (postfix).
Then I needed to adjust the config of that package (using the command "postfix upgrade-configuration") all looks good in config files after that (it is master.cf I look at).
But after a reboot it is back to standard (old) parameters.NOTE: the settings made in GUI is not reverted (spam rules etc.), all is good there.
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pfSense recreates everything at boot time from data in its own config.xml - which is where all the GUI settings are saved. If you change any package conf file from the command line, the change will be lost when you reboot, or some other event happens that makes pfSense restart all the packages. You have to find a way to do your settings using the GUI provided with the package.