CiviCRM Community Forums (archive)

I set Outbound Mail to "mail"; SendTestMail reports OK, but I do not receive any mail.

Now, I have scheduled a mass-mail job.
First of all, I send the mail to a test address, and it arrives to the recipient.
Then I send the mail as a test to a group of recipients; I get an OK message from CiviMAil, but none of the recipients receives the mail.
Despite of this, I try to run the effective job; again I get an OK message, the CiviMail report says that all the mails have been sent correctly, but again none of the recipients gets the mail.
Please hel me. Thank you.

Cron has been configured and gives the following error:

--2014-11-26 21:01:34--  http://heldercamara.it/chcnet/administrator/components/com_civicrm/civicrm/bin/cron.php?name=admin-net&pass=nemessimo24&key=87577494798e52089d0e0f9aaccd5ada
Risoluzione di heldercamara.it... 149.3.144.209
Connessione a heldercamara.it|149.3.144.209|:80... connesso.
HTTP richiesta inviata, in attesa di risposta... 500 Internal Server Error
2014-11-26 21:01:34 ERRORE 500: Internal Server Error.

mod_fcgid: stderr: PHP Fatal error: Cannot redeclare class JApplicationHelper in /var/www/vhosts/heldercamara.it/httpdocs/chcnet/libraries/cms/application/helper.php on line 20