Index: install.php
===================================================================
RCS file: /cvs/drupal/drupal/install.php,v
retrieving revision 1.176
diff -u -p -r1.176 install.php
--- install.php	2 Jun 2009 06:58:15 -0000	1.176
+++ install.php	5 Jun 2009 17:11:59 -0000
@@ -1125,9 +1125,11 @@ function install_configure_form_validate
   if ($error = user_validate_name($form_state['values']['account']['name'])) {
     form_error($form['admin_account']['account']['name'], $error);
   }
+  $form_state['values']['account']['mail'] = trim($form_state['values']['account']['mail']);
   if ($error = user_validate_mail($form_state['values']['account']['mail'])) {
     form_error($form['admin_account']['account']['mail'], $error);
   }
+  $form_state['values']['site_mail'] = trim($form_state['values']['site_mail']);
   if ($error = user_validate_mail($form_state['values']['site_mail'])) {
     form_error($form['site_information']['site_mail'], $error);
   }
Index: modules/comment/comment.module
===================================================================
RCS file: /cvs/drupal/drupal/modules/comment/comment.module,v
retrieving revision 1.719
diff -u -p -r1.719 comment.module
--- modules/comment/comment.module	3 Jun 2009 06:52:29 -0000	1.719
+++ modules/comment/comment.module	5 Jun 2009 17:12:00 -0000
@@ -1390,6 +1390,7 @@ function comment_validate($edit) {
       }
 
       if ($edit['mail']) {
+        $edit['mail'] = trim($edit['mail']);
         if (!valid_email_address($edit['mail'])) {
           form_set_error('mail', t('The e-mail address you specified is not valid.'));
         }
Index: modules/contact/contact.pages.inc
===================================================================
RCS file: /cvs/drupal/drupal/modules/contact/contact.pages.inc,v
retrieving revision 1.21
diff -u -p -r1.21 contact.pages.inc
--- modules/contact/contact.pages.inc	10 May 2009 05:06:50 -0000	1.21
+++ modules/contact/contact.pages.inc	5 Jun 2009 17:12:00 -0000
@@ -105,6 +105,7 @@ function contact_site_form_validate($for
   if (!$form_state['values']['cid']) {
     form_set_error('cid', t('You must select a valid category.'));
   }
+  $form_state['values']['mail'] = trim($form_state['values']['mail']);
   if (!valid_email_address($form_state['values']['mail'])) {
     form_set_error('mail', t('You must enter a valid e-mail address.'));
   }
Index: modules/system/system.admin.inc
===================================================================
RCS file: /cvs/drupal/drupal/modules/system/system.admin.inc,v
retrieving revision 1.153
diff -u -p -r1.153 system.admin.inc
--- modules/system/system.admin.inc	5 Jun 2009 05:28:28 -0000	1.153
+++ modules/system/system.admin.inc	5 Jun 2009 17:12:00 -0000
@@ -1245,6 +1245,7 @@ function system_site_information_setting
  */
 function system_site_information_settings_validate($form, &$form_state) {
   // Validate the e-mail address.
+  $form_state['values']['site_mail'] = trim($form_state['values']['site_mail']);
   if ($error = user_validate_mail($form_state['values']['site_mail'])) {
     form_set_error('site_mail', $error);
   }
Index: modules/system/system.module
===================================================================
RCS file: /cvs/drupal/drupal/modules/system/system.module,v
retrieving revision 1.708
diff -u -p -r1.708 system.module
--- modules/system/system.module	5 Jun 2009 05:28:28 -0000	1.708
+++ modules/system/system.module	5 Jun 2009 17:12:00 -0000
@@ -2057,6 +2057,7 @@ function system_send_email_action_form($
 function system_send_email_action_validate($form, $form_state) {
   $form_values = $form_state['values'];
   // Validate the configuration form.
+  $form_values['recipient'] = trim($form_values['recipient']);
   if (!valid_email_address($form_values['recipient']) && $form_values['recipient'] != '%author') {
     // We want the literal %author placeholder to be emphasized in the error message.
     form_set_error('recipient', t('Please enter a valid email address or %author.', array('%author' => '%author')));