sqmail: tweak default scripts

Limit RAM to 50MB to mitigate CVE-2005-1513.

Disable SPF as recommended by upstream.

srcpkgs/sqmail/files/qmail-send/run

@@ -4,4 +4,6 @@ if [ -f /var/qmail/control/defaultdelivery ]; then
 else
 	defaultdelivery=./Maildir/
 fi
-exec env - PATH="/var/qmail/bin:$PATH" qmail-start $defaultdelivery
+exec env - PATH="/var/qmail/bin:$PATH" \
+     chpst -m 50000000 \
+     qmail-start $defaultdelivery

srcpkgs/sqmail/files/qmail-smtpd/run

@@ -2,18 +2,19 @@
 QMAILU=$(id -u _qmaild)
 QMAILG=$(id -g _qmaild)
 HOSTNAME=$(hostname)
-export SPF="1"
 export UTF8="1"
 if [ -f /var/qmail/ssl/ssl.env ]; then
 	export UCSPITLS=""
 	. /var/qmail/ssl/ssl.env
 	exec env PATH="/var/qmail/bin:$PATH" \
+	     chpst -m 50000000 \
 	     sslserver -seVn -Rp -l $HOSTNAME \
 	     -Xx /var/qmail/control/rules.smtpd.cdb \
 	     -u $QMAILU -g $QMAILG :0 25 \
 	     qmail-smtpd 2>&1
 else
 	exec env PATH="/var/qmail/bin:$PATH" \
+	     chpst -m 50000000 \
 	     tcpserver -p -v \
 	     -Xx /var/qmail/control/rules.smtpd.cdb \
 	     -u $QMAILU -g $QMAILG :0 25 \

srcpkgs/sqmail/files/qmail-smtpsd/run

@@ -6,6 +6,7 @@ export SMTPAUTH="!"
 export UTF8="1"
 . /var/qmail/ssl/ssl.env
 exec env PATH="/var/qmail/bin:/usr/local/bin:$PATH" \
+     chpst -m 50000000 \
      sslserver -seV -Rp -l $HOSTNAME \
      -Xx /var/qmail/control/rules.smtpd.cdb \
      -u $QMAILU -g $QMAILG :0 465 \

srcpkgs/sqmail/files/qmail-smtpsub/run

@@ -7,6 +7,7 @@ export UCSPITLS="!"
 export UTF8="1"
 . /var/qmail/ssl/ssl.env
 exec env PATH="/var/qmail/bin:/usr/local/bin:$PATH" \
+     chpst -m 50000000 \
      sslserver -seVn -Rp -l $HOSTNAME \
      -u $QMAILU -g $QMAILG :0 587 \
      qmail-smtpd qmail-authuser true 2>&1

srcpkgs/sqmail/template

@@ -1,7 +1,7 @@
 # Template file for 'sqmail'
 pkgname=sqmail
 version=4.0.06
-revision=2
+revision=3
 create_wrksrc=yes
 build_wrksrc="mail/${pkgname}/${pkgname}-${version}/src"
 makedepends="fehQlibs libidn2-devel ucspi-ssl-devel"