It is a simple workaround to get it running and I just wanted to share that with you guys.  You know all the joomla sites will run on only one domain either www.yourdomain.com or yourdomain.com. It will redirect to the original URL if you try the other one.  On this case find the actual domain that runs the joomla site. If it is www.yourdomain.com then the URL you are trying to embed SWF file should with start with WWW else it should not start with WWW. Simple.. Try this. Best if luck.

Joomla 1.0.x: includes/class.phpmailer.php

Joomla 1.5: includes/phpmailer.php

Find the code around the line 537:

if(strstr($hosts[$index], ":"))
        list($host, $port) = explode(":", $hosts[$index]);
else
{
        $host = $hosts[$index];
        $port = $this->Port;
}

Replace it with:

if (preg_match('#(([a-z]+://)?[^:]+):(\d+)#i', $hosts[$index], $match))
{
        $host = $match[1];
        $port = $match[3];
}
else
{
        $host = $hosts[$index];
        $port = $this->Port;
}

Now login to your joomla backend and go to Mailer in Global configuration

Enter/choose the options in below format

Mailer: SMTP Server
Mail From: <your_user_id>@gmail.com (Google apps user: your_user_id@yourdomain.com)
SMTP Auth: Yes
SMTP User: <your_user_id>@gmail.com (Google apps user: your_user_id@yourdomain.com)
SMTP Password: <your_password>
SMTP Host: ssl://smtp.gmail.com:465

Be sure that you have enable POP in your Gmail or Google Apps before you save this and test. All the best.