I have set the Outbound mailer to mail(), SMTP seems to really be problematic.
I am successful in the following: Contacts | New eMail Administer | Settings - Outbound Mail | Save & Send Test email
All go into the inbox of the intended external email address.
From Joomla, all the email functionality is working as well.
I am unsuccessful in being able to send a newsletter from the Mailings | Draft Unscheduled Mailings area,
I get a generic message, Error in call to Mailing_send_test : sendmail returned error code 1
This only happens if I send it to an outbound email (email addresses within the hosting provider work)
Any ideas would be greatly appreciated.