mail-mta/sendmail
Widely-used Mail Transport Agent (MTA)
USE Flags
ipv6
Global: Adds support for IP version 6
ldap
Global: Adds LDAP support (Lightweight Directory Access Protocol)
mbox
Global: Adds support for mbox (/var/spool/mail) style mail spools
nis
Global: Support for NIS/YP services
sasl
Global: Adds support for the Simple Authentication and Security Layer
selinux
Global: !!internal use only!! Security Enhanced Linux support, this must be set by the selinux profile or breakage will occur
sockets
Global: Adds support for tcp/ip sockets
ssl
Global: Adds support for Secure Socket Layer connections
tcpd
Global: Adds support for TCP wrappers