Revert "some tweaks" to separate tinycdb and postfix commits

This reverts commit 982f325dceeb12af7f22c1d7f92f3ac31df1ce38.
Revert "some tweaks" to separate tinycdb and postfix commits

This reverts commit 6ddedf2ab69647d8f56bd16e157f1d94e169ce03.
Revert "postfix MTA" to separate tinycdb and postfix commits

This reverts commit f64157ed48c340c5cc8d969f57688a713b53290a.