Emailing to groups unsuccessful

[adrian_robin0613]

In my application I use Zend Mail within a PHP script to send messages to recipients within my company. Sending to individual recipients works just fine, but sending to groups does not seem to work. The name of the group I want to send to is "ITFtMill." I know for a fact that "ItFtMill@northerntool.com" is a valid email address, just like it would be for an individual recipient.

The following is a snippet of my PHP code:

Code: Select all

if ($i == 2)
  $mail_group = "ITFtMill@northerntool.com";
if (($i == 1) || (($i > 2) && ($i < 8)))
  $mail_group = "John.Smith@northerntool.com";
if ($i == 8)
   $mail_group = "John.Smith@northerntool.com";


Messages succesfully get sent to John Smith, but members of 'ITFtMill' do not receive any messages. What could cause an attempt to send to a group to be unsuccessful? What settings, if any, do I need to review or modify?

Thanks,

Adrian