title: Mantis doesn't send email to se domain
body: <p>Mantis (1.2.1, 1.2.4, and 1.2.5) sends emails to anyone under company.com domain, but fails for company.se domain (Sweden office).</p>
  
  <p>Turning off email validation <code>$g_validate_email = OFF;</code> doesn't help. The domains aren't being limited as specified by <code>$g_limit_email_domain   = OFF;</code> in config_default_inc.php.</p>
  
  <p>The mail server is specified correctly in php.ini (version 5.3.6) and can send emails to company.se when using Microsoft Outlook.</p>
  
  <p>How can I resolve this issue?</p>