Beginning with V8.10,
sendmail is designed to support six kinds of
network sockets, as listed in Table 3-10.
Currently, NETNS and NETX25 are accepted but not implemented.
Table 3-10. Define for network support
|
NETINET
|
A TCP/IP-based network (IPv4)
|
|
NETINET6
|
IPv6-based network
|
|
NETISO
|
An ISO 8022 network
|
|
NETNS
|
A Xerox NS protocol network (tentative)
|
|
NETUNIX
|
A Unix domain network
|
|
NETX25
|
A CCITTN X.25 network (tentative)
|
Stubs are included in the source code for any programmer who is
interested in implementing NETNS or NETX25. In general, the others
are already declared appropriately for your system. Should you desire
to change one, you can do so in your Build
m4 file. The following, for example, removes
support for IPv4 from sendmail:
APPENDDEF(`confENVDEF', `-DNETINET=0')
Defining network support only causes the code for that network to be
included in sendmail. The network serviced by a
particular invocation of sendmail is selected
with the Family parameter of the
DaemonPortOptions option (DaemonPortOptions). In the absence of an option declaration,
IPv4 (for NETINET) is used as the default.
If you are running a precompiled sendmail
binary, you can use the -d0.1 debugging
command-line switch (-d0.1) to determine which
network types are supported (if any appear in the list, support is
included).
