The only way to reset Postfix to what you had earlier would be to restore the config from a server backup or from corresponding rpm or deb package. If you don't have a backup of the Postfix config, there isn't a way to get your original config back.
The only way to reset Postfix to what you had earlier would be to restore the config from a server backup or from corresponding rpm or deb package. If you don't have a backup of the Postfix config, there isn't a way to get your original config back.