diff --git a/default/mail_tt2/report.tt2 b/default/mail_tt2/report.tt2
index d6092e445..c516e7f61 100644
--- a/default/mail_tt2/report.tt2
+++ b/default/mail_tt2/report.tt2
@@ -663,6 +663,15 @@ Warning: this message may already have been sent by one of the list's moderators
 [%~ ELSIF report_entry == 'blocklisted_domain' ~%]
   [%|loc(report_param.email || report_param.value)%]Address "%1" belongs to a blocklisted domain[%END%]
 
+[%~ ELSIF report_entry == 'email_is_the_list' ~%]
+  [% IF report_param.role == 'owner' ~%]
+    [%|loc(report_param.email)%]Address "%1" is the address for the list owners[%END%]
+  [%~ ELSIF report_param.role == 'editor' ~%]
+    [%|loc(report_param.email)%]Address "%1" is the address for the list moderators[%END%]
+  [%~ ELSE ~%]
+    [%|loc(report_param.email)%]Address "%1" is the address of the list[%END%]
+  [%~ END %]
+
 [%~ ELSIF report_entry == 'incorrect_passwd' ~%]
   [%|loc%]Provided password is incorrect[%END%]
 
diff --git a/src/lib/Sympa/List.pm b/src/lib/Sympa/List.pm
index 3149c49a7..bc3f6a302 100644
--- a/src/lib/Sympa/List.pm
+++ b/src/lib/Sympa/List.pm
@@ -3117,13 +3117,25 @@ sub add_list_member {
         unless (Sympa::Tools::Text::valid_email($u->{email})) {
             $log->syslog('err', 'Ignoring %s which is not a valid email',
                 $u->{email});
+            push @$stash_ref,
+                [
+                'user', 'incorrect_email',
+                {email => $u->{email}, role => 'member'}
+                ];
             next;
         }
 
         my $who = Sympa::Tools::Text::canonic_email($u->{email});
         if (Sympa::Tools::Domains::is_blocklisted($who)) {
             $log->syslog('err', 'Ignoring %s which uses a blocklisted domain',
-                $u->{email});
+                $who);
+            push @$stash_ref, ['user', 'blocklisted_domain', {email => $who}];
+            next;
+        }
+        if ($who eq $self->get_id) {
+            $log->syslog('err',
+                'Ignoring %s which is the address of the list', $who);
+            push @$stash_ref, ['user', 'email_is_the_list', {email => $who}];
             next;
         }
         unless (
@@ -3314,7 +3326,7 @@ sub add_list_admin {
     $sdm->begin;
 
     foreach my $user (@users) {
-        $total++ if $self->_add_list_admin($role, $user, stash => $stash_ref);
+        $total++ if $self->_add_list_admin($role, $user, %options);
     }
 
     unless ($sdm->commit) {
@@ -3338,9 +3350,25 @@ sub _add_list_admin {
 
     my $stash_ref = $options{stash} || [];
 
-    return undef unless Sympa::Tools::Text::valid_email($u->{email});
+    unless (Sympa::Tools::Text::valid_email($u->{email})) {
+        $log->syslog('err', 'Ignoring %s which is not a valid email',
+            $u->{email});
+        push @$stash_ref,
+            ['user', 'incorrect_email',
+            {email => $u->{email}, role => $role}];
+        return undef;
+    }
     my $who = Sympa::Tools::Text::canonic_email($u->{email});
 
+    if ($who eq Sympa::get_address($self, $role)) {
+        $log->syslog('err',
+            'Ignoring %s which is the address for the list %s',
+            $who, $role);
+        push @$stash_ref,
+            ['user', 'email_is_the_list', {email => $who, role => $role}];
+        return undef;
+    }
+
     my $values = $self->get_default_user_options(role => $role);
     while (my ($k, $v) = each %$u) {
         $values->{$k} = $v if defined $v;
diff --git a/src/lib/Sympa/Request/Handler/add.pm b/src/lib/Sympa/Request/Handler/add.pm
index b4787d454..0aadb05db 100644
--- a/src/lib/Sympa/Request/Handler/add.pm
+++ b/src/lib/Sympa/Request/Handler/add.pm
@@ -35,9 +35,6 @@ use Sympa;
 use Conf;
 use Sympa::Language;
 use Sympa::Log;
-use Sympa::Tools::Domains;
-use Sympa::Tools::Password;
-use Sympa::Tools::Text;
 use Sympa::User;
 
 use base qw(Sympa::Request::Handler);
@@ -66,31 +63,15 @@ sub _twist {
 
     $language->set_lang($list->{'admin'}{'lang'});
 
-    unless (Sympa::Tools::Text::valid_email($email)) {
-        $self->add_stash($request, 'user', 'incorrect_email',
-            {'email' => $email});
-        $log->syslog('err',
-            'request "add" rejected; incorrect email "%s"', $email);
-        return undef;
-    }
-
     my @stash;
     if ($role eq 'member') {
         unless ($request->{force} or $list->is_subscription_allowed) {
             $log->syslog('info', 'List %s not open', $list);
             $self->add_stash($request, 'user', 'list_not_open',
-                {'status' => $list->{'admin'}{'status'}});
+                {status => $list->{'admin'}{'status'}});
             $self->{finish} = 1;
             return undef;
         }
-        if (Sympa::Tools::Domains::is_blocklisted($email)) {
-            $self->add_stash($request, 'user', 'blocklisted_domain',
-                {'email' => $email});
-            $log->syslog('err',
-                'request "add" rejected; blocklisted domain for "%s"',
-                $email);
-            return undef;
-        }
 
         $list->add_list_member(
             {email => $email, gecos => $comment, custom_attribute => $ca},
@@ -136,7 +117,7 @@ sub _report_member {
     my $comment = $request->{gecos};
 
     $self->add_stash($request, 'notice', 'now_subscriber',
-        {'email' => $email, listname => $list->{'name'}});
+        {email => $email, listname => $list->{'name'}});
 
     # FIXME: Required?
     my $user = Sympa::User->new($email);
diff --git a/src/lib/Sympa/Request/Handler/del.pm b/src/lib/Sympa/Request/Handler/del.pm
index d509230ad..7e72d6c0b 100644
--- a/src/lib/Sympa/Request/Handler/del.pm
+++ b/src/lib/Sympa/Request/Handler/del.pm
@@ -65,7 +65,7 @@ sub _twist {
         unless ($request->{force} or $list->is_subscription_allowed) {
             $log->syslog('info', 'List %s not open', $list);
             $self->add_stash($request, 'user', 'list_not_open',
-                {'status' => $list->{'admin'}{'status'}});
+                {status => $list->{'admin'}{'status'}});
             $self->{finish} = 1;
             return undef;
         }
diff --git a/src/lib/Sympa/Request/Handler/include.pm b/src/lib/Sympa/Request/Handler/include.pm
index ebc9e535f..e6076b299 100644
--- a/src/lib/Sympa/Request/Handler/include.pm
+++ b/src/lib/Sympa/Request/Handler/include.pm
@@ -418,8 +418,8 @@ sub _update_users {
     while (my $entry = $ds->next) {
         my $email = $entry->[0];
 
-        next unless Sympa::Tools::Text::valid_email($email);
-        $email = Sympa::Tools::Text::canonic_email($email);
+        $email = Sympa::Tools::Text::canonic_email($email)
+            if Sympa::Tools::Text::valid_email($email);
 
         # 1. If role of the data source is 'member' and the user is excluded:
         #    Do nothing.
diff --git a/src/lib/Sympa/Request/Handler/signoff.pm b/src/lib/Sympa/Request/Handler/signoff.pm
index 5582920f7..ac9e30cb5 100644
--- a/src/lib/Sympa/Request/Handler/signoff.pm
+++ b/src/lib/Sympa/Request/Handler/signoff.pm
@@ -60,13 +60,10 @@ sub _twist {
 
     # If a list is not 'open' and allow_subscribe_if_pending has been set to
     # 'off' returns undef.
-    unless ($list->{'admin'}{'status'} eq 'open'
-        or
-        Conf::get_robot_conf($list->{'domain'}, 'allow_subscribe_if_pending')
-        eq 'on') {
-        $self->add_stash($request, 'user', 'list_not_open',
-            {'status' => $list->{'admin'}{'status'}});
+    unless ($list->is_subscription_allowed) {
         $log->syslog('info', 'List %s not open', $list);
+        $self->add_stash($request, 'user', 'list_not_open',
+            {status => $list->{'admin'}{'status'}});
         return undef;
     }
 
diff --git a/src/lib/Sympa/Request/Handler/subscribe.pm b/src/lib/Sympa/Request/Handler/subscribe.pm
index e34bb59fa..e99debeaa 100644
--- a/src/lib/Sympa/Request/Handler/subscribe.pm
+++ b/src/lib/Sympa/Request/Handler/subscribe.pm
@@ -35,8 +35,6 @@ use Sympa;
 use Conf;
 use Sympa::Language;
 use Sympa::Log;
-use Sympa::Tools::Domains;
-use Sympa::Tools::Password;
 use Sympa::User;
 
 use base qw(Sympa::Request::Handler);
@@ -74,24 +72,13 @@ sub _twist {
         undef $comment;
     }
 
-    if (Sympa::Tools::Domains::is_blocklisted($email)) {
-        $self->add_stash($request, 'user', 'blocklisted_domain',
-            {'email' => $email});
-        $log->syslog('err',
-            'SUBSCRIBE to %s command rejected; blocklisted domain for "%s"',
-            $list, $email);
-        return undef;
-    }
-
     # If a list is not 'open' and allow_subscribe_if_pending has been set to
     # 'off' returns undef.
-    unless ($list->{'admin'}{'status'} eq 'open'
-        or
-        Conf::get_robot_conf($list->{'domain'}, 'allow_subscribe_if_pending')
-        eq 'on') {
-        $self->add_stash($request, 'user', 'list_not_open',
-            {'status' => $list->{'admin'}{'status'}});
+    unless ($list->is_subscription_allowed) {
         $log->syslog('info', 'List %s not open', $list);
+        $self->add_stash($request, 'user', 'list_not_open',
+            {status => $list->{'admin'}{'status'}});
+        $self->{finish} = 1;
         return undef;
     }