Choose IP when sending mail in php : <p>My server has 2 IPs.</p>

<p>Whenever I send an email in php using <code>mail()</code> the IP used to send the email is IP A. However, I'd like to use IP B.</p>

<p>Is this possible?</p>

<p>If yes, is this possible using <code>mail()</code> ?</p>

<p>If yes, how?</p>
