Upgraded to PEAR::Mail_Mime 1.8.3

program/lib/Mail/mimePart.php

@@ -807,7 +807,7 @@ class Mail_mimePart
         // Structured header (make sure addr-spec inside is not encoded)
         if (!empty($separator)) {
             // Simple e-mail address regexp
-            $email_regexp = '(\S+|("[^\r\n"]+"))@\S+';
+            $email_regexp = '([^\s<]+|("[^\r\n"]+"))@\S+';
 
             $parts = Mail_mimePart::_explodeQuotedString($separator, $value);
             $value = '';