I am using tin 2.6.4, from AUR repo (https://aur.archlinux.org/packages/tin). And I tried to search for -pubring.kbx- in the source files of that package, and it was not found. So, I tried to find only -pubring-, and it was found in -pgp.c- : if defined(HAVE_GPG) /* gpg */ define PGP_PUBRING "pubring.gpg" I will try to compile the latest version (2.6.5) -- Luc