/usr/local/lib/libesmtp.so
/usr/local/lib/libesmtp.so.6
/usr/local/lib/libesmtp.so.6.1.6
/usr/local/lib/esmtp-plugins/sasl-cram-md5.so
/usr/local/lib/esmtp-plugins/sasl-plain.so
/usr/local/lib/esmtp-plugins/sasl-login.so