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-rw-r--r--usr.sbin/sendmail/cf/feature/nullclient.m461
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diff --git a/usr.sbin/sendmail/cf/feature/nullclient.m4 b/usr.sbin/sendmail/cf/feature/nullclient.m4
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--- /dev/null
+++ b/usr.sbin/sendmail/cf/feature/nullclient.m4
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+PUSHDIVERT(-1)
+#
+# Copyright (c) 1983 Eric P. Allman
+# Copyright (c) 1988, 1993
+# The Regents of the University of California. All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+# 1. Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+# notice, this list of conditions and the following disclaimer in the
+# documentation and/or other materials provided with the distribution.
+# 3. All advertising materials mentioning features or use of this software
+# must display the following acknowledgement:
+# This product includes software developed by the University of
+# California, Berkeley and its contributors.
+# 4. Neither the name of the University nor the names of its contributors
+# may be used to endorse or promote products derived from this software
+# without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+# ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+# SUCH DAMAGE.
+#
+ifdef(`SMTP_MAILER_FLAGS',,
+ `define(`SMTP_MAILER_FLAGS',
+ `ifdef(`_OLD_SENDMAIL_', `L', `')')')
+define(_NULL_CLIENT_ONLY_, `1')
+ifelse(_ARG_, `', `errprint(`Feature "nullclient" requires argument')',
+ `define(`MAIL_HUB', _ARG_)')
+POPDIVERT
+
+#
+# This is used only for relaying mail from a client to a hub when
+# that client does absolutely nothing else -- i.e., it is a "null
+# mailer". In this sense, it acts like the "R" option in Sun
+# sendmail.
+#
+
+VERSIONID(`@(#)nullclient.m4 8.2 (Berkeley) 8/21/93')
+
+PUSHDIVERT(7)
+############################################
+### Null Client Mailer specification ###
+############################################
+
+ifdef(`confRELAY_MAILER',,
+ `define(`confRELAY_MAILER', `nullclient')')dnl
+
+Mnullclient, P=[IPC], F=CONCAT(mDFMuXa, SMTP_MAILER_FLAGS), A=IPC $h
+POPDIVERT
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