diff --git a/src/freedombone-base-email b/src/freedombone-base-email
index 83a633ac..82307342 100755
--- a/src/freedombone-base-email
+++ b/src/freedombone-base-email
@@ -269,7 +269,10 @@ function configure_email_onion {
     # 20:$onion_address
     # 3600 IN SRV 0 5 25 $onion_address
 
-    # Test with: exim -d -bt username@$onion_address
+    # To test the system, on receiving server:
+    #   exim -bd -d -oX 25
+    # On the sensing server:
+    #   exim -d -oX 25 -bt username@$onion_address
 
     { echo "perl_startup = do '/etc/exim4/perl-routines.pl'";
       echo "perl_at_start"; } > /etc/exim4/conf.d/main/00_exim4-config_perl
@@ -1093,7 +1096,8 @@ function spam_filtering {
     # This configuration is based on https://wiki.debian.org/DebianSpamAssassin
     sed -i 's/local_parts = postmaster/local_parts = postmaster:abuse/g' /etc/exim4/conf.d/acl/30_exim4-config_check_rcpt
     sed -i '/domains = +local_domains : +relay_to_domains/a\    set acl_m0 = rfcnames' /etc/exim4/conf.d/acl/30_exim4-config_check_rcpt
-    sed -i "s/accept/accept condition = \${if eq{\$acl_m0}{rfcnames} {1}{0}}/g" /etc/exim4/conf.d/acl/40_exim4-config_check_data
+    # This prevents .onion domains from being accepted
+    #sed -i "s/accept/accept condition = \${if eq{\$acl_m0}{rfcnames} {1}{0}}/g" /etc/exim4/conf.d/acl/40_exim4-config_check_data
 
     { echo "warn  message = X-Spam-Score: \$spam_score (\$spam_bar)";
       echo '      spam = nobody:true';