dev@baldeagleos.com Development zx2c4@gentoo.org Jason A. Donenfeld OpenSMTPD is an implementation of the server-side SMTP protocol as defined by RFC 5321, with some additional standard extensions. It allows ordinary machines to exchange e-mails with other systems speaking the SMTP protocol. cpe:/a:opensmtpd:opensmtpd Enable this to install as system-wide MTA ports