Known Issue (and fix) with Spam Check
The spam check service we used initially in Power Messenger has changed from a free service to a paid model, so the spam check feature will no longer work.
To fix the issue:
in the admin_pm/common/sendPreview.php file, change line 204:
sendPreviewSpamCheckMessage($emailAddress, $fromName, "spamcheck@sitesell.net", $mailingSubject, $mailingContent);
to:
sendPreviewSpamCheckMessage($emailAddress, $fromName, "check@isnotspam.com", $mailingSubject, $mailingContent);