Errors

use_strict

Mail::Summary::Tools

use_warnings

Mail::Summary::Tools

valid_signature

Old SIGNATURE detected. Please inform the module author to regenerate SIGNATURE using Module::Signature version 0.82 or newer.
gpg: Signature made Tue 15 Aug 2006 06:50:49 AM JST
gpg:                using DSA key 542C11C0EBD27418
gpg: Can't check signature: No public key
==> BAD/TAMPERED signature detected! <==