diff --git a/dma/Makefile b/dma/Makefile
index 73869b14bf..6d8889c9ca 100644
--- a/dma/Makefile
+++ b/dma/Makefile
@@ -15,7 +15,7 @@ LICENSE=	modified-bsd
 BUILD_DEFS+=		VARBASE
 
 PKG_SYSCONFSUBDIR=	dma
-EGDIR=			${PREFIX}/share/exmaples/${PKGBASE}
+EGDIR=			${PREFIX}/share/examples/${PKGBASE}
 
 USE_TOOLS+=	flex yacc
 LDFLAGS.SunOS+=	-lsocket -lnsl
@@ -43,15 +43,39 @@ MAKE_FLAGS+=	"MAN=${PREFIX}/${PKGMANDIR}"
 
 INSTALLATION_DIRS=	${EGDIR}
 
-CONF_FILES=	${EGDIR}/dma.conf ${PKG_SYSCONFDIR}/dma.conf
-CONF_FILES+=	${EGDIR}/auth.conf ${PKG_SYSCONFDIR}/auth.conf
+CONF_FILES=		${EGDIR}/dma.conf ${PKG_SYSCONFDIR}/dma.conf
+CONF_FILES_PERMS+=	${EGDIR}/auth.conf ${PKG_SYSCONFDIR}/auth.conf root wheel 0640
+
+SUBST_CLASSES+=		paths
+SUBST_FILES.paths=	${WRKDIR}/mailer.conf
+SUBST_VARS.paths=	PREFIX
+SUBST_STAGE.paths=	pre-build
+
+SUBST_CLASSES+=		auth
+SUBST_FILES.auth=	dma.conf
+SUBST_SED.auth=		-e 's,/etc/dma/,${PREFIX}/etc/dma/,g'
+SUBST_STAGE.auth=	pre-build
+
+.if "${OPSYS}" == "NetBSD"
+SUBST_CLASSES+=		aliases
+SUBST_FILES.aliases=	dma.conf
+SUBST_SED.aliases=	-e 's,/etc/aliases,/etc/mail/aliases,g' \
+			-e 's,^\#ALIASES,ALIASES,g'
+SUBST_STAGE.aliases=	pre-build
+.endif
 
 OWN_DIRS=	${VARBASE}/spool/dma
-OWN_DIRS_PERMS=	${VARBASE}/spool/dma ${DMA_ROOT_USER} ${DMA_GROUP} 750
+OWN_DIRS_PERMS=	${VARBASE}/spool/dma ${DMA_ROOT_USER} ${DMA_GROUP} 2770
+
+SPECIAL_PERMS+= sbin/dma root ${DMA_GROUP} 2555
+
+post-extract:
+	${CP} ${FILESDIR}/mailer.conf ${WRKDIR}/mailer.conf
 
 post-install:
 	${INSTALL_DATA} ${WRKSRC}/dma.conf ${DESTDIR}${EGDIR}/dma.conf
-	${INSTALL_DATA} ${WRKSRC}/auth.conf ${DESTDIR}${EGDIR}/auth.conf
+	${INSTALL_DATA} -m 0640 ${WRKSRC}/auth.conf ${DESTDIR}${EGDIR}/auth.conf
+	${INSTALL_DATA} ${WRKDIR}/mailer.conf ${DESTDIR}${EGDIR}/mailer.conf
 
 .include "../../security/openssl/buildlink3.mk"
 .include "../../mk/bsd.pkg.mk"
diff --git a/dma/PLIST b/dma/PLIST
index 66705d3bfb..05d3bac34c 100644
--- a/dma/PLIST
+++ b/dma/PLIST
@@ -2,5 +2,6 @@
 libexec/dma-mbox-create
 man/man8/dma.8
 sbin/dma
-share/exmaples/dma/auth.conf
-share/exmaples/dma/dma.conf
+share/examples/dma/auth.conf
+share/examples/dma/dma.conf
+share/examples/dma/mailer.conf