Zaka zisanu chiyambireni kumasulidwa komaliza anapanga Kutulutsidwa kwa seva ya SMTP Sendmail 8.16.1. Mtundu watsopanowu umaphatikizapo kusintha kwakukulu kokhudzana ndi chithandizo cha STARTTLS (mwachitsanzo, kuwonjezera kuthekera kogwiritsa ntchito ma algorithms a elliptic curve encryption), kudula mitengo bwino, kuwonjezera njira zatsopano za SSLEngine ndi SSLEnginePath zogwiritsa ntchito injini za OpenSSL, ndikuwonjezera chithandizo choyambirira. DATA (DNS-based Authentication of Named Entities). Kutulutsidwa kwatsopanoku kumakonzanso nsikidzi zomwe zasonkhanitsidwa ndikuwonetsetsa kuti zikugwirizana ndi Darwin 14-18 (macOS 10.x) ndi FreeBSD 12.