diff --git a/src/lib/Sympa/Config/Schema.pm b/src/lib/Sympa/Config/Schema.pm
index 0d412eead..802d451a3 100644
--- a/src/lib/Sympa/Config/Schema.pm
+++ b/src/lib/Sympa/Config/Schema.pm
@@ -479,11 +479,12 @@ our %pinfo = (
         context    => [qw(domain site)],
         order      => 4.04,
         group      => 'mta',
-        format     => 'makemap|newaliases|postalias|postmap|/.+',
+        format     => 'makemap|newaliases|postalias|postmap|/.+|none',
         default    => 'newaliases',
         gettext_id => 'Program used to update alias database',
         gettext_comment =>
             'This may be "makemap", "newaliases", "postalias", "postmap" or full path to custom program.',
+        # Option "none" was added on 6.2.61b
     },
     aliases_wrapper => {
         context    => [qw(domain site)],
diff --git a/src/sbin/sympa_newaliases.pl.in b/src/sbin/sympa_newaliases.pl.in
index d05a231be..566f56e1d 100644
--- a/src/sbin/sympa_newaliases.pl.in
+++ b/src/sbin/sympa_newaliases.pl.in
@@ -140,6 +140,9 @@ if ($aliases_program =~ m{\A/}) {
         q{--POSTMAP--}, $aliases_db_type, $aliases_file);
 
     exec q{--POSTMAP--}, "$aliases_db_type:$aliases_file";
+} elsif ($aliases_program eq 'none') {
+    $log->syslog('debug2', 'Skipping execution of aliases_program');
+    exit 0;
 } else {
     $log->syslog('err', 'Invalid aliases_program "%s"', $aliases_program);
     exit 1;