NO JOY Voicemail to Email not working on RASP Pi2 Incred PBX 13

[SMTC]

Either something got munged or I just don't have it set right.

The "Instruction Manual" says to edit the sendmail.cf file and add my ISP's SMTP server after the "DS". (The sendmail.cf file incidentally warns to not edit it directly!) Well, that aint working.

You have new mail in /var/mail/root:

--tBU3QqGT028533.1451446012/noreply.incrediblepbx.com
Content-Type: message/delivery-status

Reporting-MTA: dns; noreply.incrediblepbx.com
Received-From-MTA: DNS; pbx.dyndns.org
Arrival-Date: Tue, 29 Dec 2015 22:26:49 -0500

Final-Recipient: RFC822; [email protected]
Action: failed
Status: 5.1.0
Diagnostic-Code: SMTP; 550 5.1.0 <root@raspberrypi> Suspect invalid mailer domain please check your DNS records - ERR007
Last-Attempt-Date: Tue, 29 Dec 2015 22:26:52 -0500

--tBU3QqGT028533.1451446012/noreply.incrediblepbx.com
Content-Type: text/rfc822-headers

Return-Path: <[email protected]>
Received: from noreply.incrediblepbx.com (pbx.dyndns.org [127.0.0.1])
by noreply.incrediblepbx.com (8.14.4/8.14.4/Debian-4) with ESMTP id tBU3QnGT028531
for <[email protected]>; Tue, 29 Dec 2015 22:26:49 -0500
Received: (from root@localhost)
by noreply.incrediblepbx.com (8.14.4/8.14.4/Submit) id tBU3Qn6Y028528
[email protected]; Tue, 29 Dec 2015 22:26:49 -0500
From: root <[email protected]>
Message-Id: <[email protected]>
Date: Tue, 29 Dec 2015 22:26:49 -0500
To: [email protected]
Subject: testmessage
User-Agent: Heirloom mailx 12.5 6/20/10
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit

--tBU3QqGT028533.1451446012/noreply.incrediblepbx.com--

Guidance on this one appreciated.

I am not clear how sendmail is working, if exim is somehow involved, or what conf files make a diff. Last time I got this working on PIAF 1.7xx I did a "paint by numbers" instruction follow to get GMAIL to do some sort of Userauth relay thing. That would good to do again - IF that works on this Incredible Pi2 distro???

But I just don't know....

Thanks,
J

UPDATE:
Gave up trying to use smtp from my ISP for sendmail and the SmartHost setting. Followed the following instructions and with a couple of kicks it now works via GMAIL as relay. Had to log into GMAIL and "allow less secure devices" though.

http://pbxinaflash.com/community/in...elay-host-for-sendmail.974/page-6#post-115500