cyrusv2 mailer should be modified to support Cyrus virtual domains

Makefile

@@ -38,6 +38,9 @@ all: cyrus-config imapd-config cyrus-imapd-service services default-sieve
 	@echo "d /run/cyrus 755 cyrus mail -" > /usr/lib/tmpfiles.d/cyrus.conf
 	@echo "$$CYRUS_IMAPD_SERVICE" > /lib/systemd/system/cyrus-imapd.service
 	systemctl enable cyrus-imapd.service
+	if [ -f "/etc/mail/mailer/cyrusv2.m4" ]; then \
+	    sed -i "s|S=EnvFromSMTP/HdrFromL, R=EnvToL/HdrToL|S=EnvFromSMTP/HdrFromSMTP, R=EnvToSMTP|" /etc/mail/mailer/cyrusv2.m4 ; \
+	fi
 	if [ -f "/etc/mail/sendmail.mc" ]; then \
 	    cd /etc/mail ; \
 	    sed -i "x;/./{x;b};x;/^MAILER(/h;//idefine(\`confLOCAL_MAILER', \`cyrusv2')dnl" sendmail.mc ; \