After a quick test, I found this configuration only works if you have the right locale data in the system.
For example, if you like to have en-US as reply_header_locale. You will need en_US in your system, you can check with this command in a terminal $ locale -a|grep en_US en_US en_US.iso88591 en_US.utf8 The system only recognize en_US, not en_US.utf8. So, you can added the missed locale via this command # dpkg-reconfigure locales or using LC_TIME trick instead. -- Setting reply_header_locale to en-US does not work https://bugs.launchpad.net/bugs/157638 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs