Just to add to the previuos post. Found this thread regarding the problem.

http://bugs.php.net/bug.php?id=28038

Objecta

Hi folks-

I installed ActiveCollab on Windows XP, with McAffee virus protection software. Unbeknownst to me, the virus software refused to let me make a connection to my smtp server. I had to uncheck the "prevent mass mailing worms from sending mail" setting to make it work. The tip-off was that I couldn't telnet to my smtp server; the telnet error said the connection was refused.

Hope this is useful to future users.

Regards,
Janet

Any ideas, anyone?

My default mail options were also not working. As a crappy workaround, I bypassed the Swift mailer object for the native sendmail() approach:

application/models/notifier/Notifier.class.php

    static function sendEmail($to, $from, $subject, $body = false, $type = 'text/plain', $encoding = '8bit') {
      Env::useLibrary('swift');
      
      $mailer = self::getMailer();
      if(!($mailer instanceof Swift)) {
        throw new NotifierConnectionError();
      } // if

      // Bypass fancy mailer if using sendmail
      $mail_transport_config = config_option('mail_transport', self::MAIL_TRANSPORT_MAIL);
      if($mail_transport_config == self::MAIL_TRANSPORT_MAIL) {
        $headers =
          "From: $from\r\n".
          "Content-Type: $type; charset=\"{$mailer->charset}\"; format=flowed\r\n".
          "Content-Transfer-Encoding: $encoding\r\n";
        return mail($to, $subject, $body, $headers, "-r $from");
      }

      $result = $mailer->send($to, $from, $subject, $body, $type, $encoding);
      $mailer->close();
      
      return $result;
    } // sendEmail

The extra "-r $from" was necessary for my host's sendmail install to get the From header working properly. Your mileage may vary.

I used a cheap hack to fix this problem on my installation. The problem seems to be somewhere with the Swift library. I didn't bother to track it down, I just switched to the standard php mailer. I changed the sendEmail() function in Notifer.class.php line 220 (/application/models/notifier/Notifier.class.php) to this:

static function sendEmail($to, $from, $subject, $body = false, $type = 'text/plain', $encoding = 'utf-8') {
return mail($to,$subject,$body,'From: activeCollab Mailer <'.$from.">\r\n");
//Env::useLibrary('swift');

//$mailer = self::getMailer();
//if(!($mailer instanceof Swift)) {
// throw new NotifierConnectionError();
//} // if

//$result = $mailer->send($to, $from, $subject, $body, $type, $encoding);
//$mailer->close();

//return $result;
} // sendEmail

I commented everything out and added the line "return mail($to,$subject,$body,'From: activeCollab Mailer <'.$from.">\r\n");".