Set readhost

src/freedombone-base-email

@@ -1028,6 +1028,7 @@ function email_smtp_proxy_through_isp {
             sed -i "s|dc_eximconfig_configtype=.*|dc_eximconfig_configtype='internet'|g" /etc/exim4/update-exim4.conf.conf
         fi
         sed -i "s|dc_smarthost=.*|dc_smarthost=''|g" /etc/exim4/update-exim4.conf.conf
+        sed -i "s|dc_readhost=.*|dc_readhost=''|g" /etc/exim4/update-exim4.conf.conf
     else
         if [[ "$isp_smtp_domain" != *'.'* ]]; then
             return
@@ -1053,6 +1054,12 @@ function email_smtp_proxy_through_isp {
             sed -i "s|dc_eximconfig_configtype=.*|dc_eximconfig_configtype='smarthost'|g" /etc/exim4/update-exim4.conf.conf
         fi
         sed -i "s|dc_smarthost=.*|dc_smarthost='${isp_smtp_domain}::${isp_smtp_port}'|g" /etc/exim4/update-exim4.conf.conf
+        read_config_param DEFAULT_DOMAIN_NAME
+        if [[ "$DEFAULT_DOMAIN_NAME" != *'.local' ]]; then
+            if [[ "$DEFAULT_DOMAIN_NAME" == *'.'* ]]; then
+                sed -i "s|dc_readhost=.*|dc_readhost='${DEFAULT_DOMAIN_NAME}'|g" /etc/exim4/update-exim4.conf.conf
+            fi
+        fi
     fi
 
     update-exim4.conf.template -r