Hello everyone,
After some searching I found that an error log readout might help. Here is the main error log for my server... lots of errors :-(
[Sun Dec 20 19:09:23 2015] [error] [client 198.154.248.248] 250-STARTTLS
[Sun Dec 20 19:09:23 2015] [error] [client 198.154.248.248] 250 HELP
[Sun Dec 20 19:09:23 2015] [error] [client 198.154.248.248] 250-host299.hostmonster.com Hello localhost [127.0.0.1]
[Sun Dec 20 19:09:23 2015] [error] [client 198.154.248.248] 250-SIZE 52428800
[Sun Dec 20 19:09:23 2015] [error] [client 198.154.248.248] 250-8BITMIME
[Sun Dec 20 19:09:23 2015] [error] [client 198.154.248.248] 250-AUTH PLAIN LOGIN
[Sun Dec 20 19:09:23 2015] [error] [client 198.154.248.248] 250-STARTTLS
[Sun Dec 20 19:09:23 2015] [error] [client 198.154.248.248] 250 HELP
[Sun Dec 20 19:09:23 2015] [error] [client 198.154.248.248] 250 OK
[Sun Dec 20 19:09:23 2015] [error] [client 198.154.248.248] 550-Verification failed for
[Sun Dec 20 19:09:23 2015] [error] [client 198.154.248.248] 550-No Such User Here
[Sun Dec 20 19:09:23 2015] [error] [client 198.154.248.248] 550 Sender verify failed
[Sun Dec 20 19:09:24 2015] [notice] [client 185.93.185.49] mod_rbl: 185.93.185.49 is listed in RBL.
[Sun Dec 20 19:09:25 2015] [error] [client 198.154.248.248] 220-host299.hostmonster.com ESMTP Exim 4.84 #2 Sun, 20 Dec 2015 19:09:25 -0700
[Sun Dec 20 19:09:25 2015] [error] [client 198.154.248.248] 220-We do not authorize the use of this system to transport unsolicited,
[Sun Dec 20 19:09:25 2015] [error] [client 198.154.248.248] 220 and/or bulk e-mail.
[Sun Dec 20 19:09:25 2015] [error] [client 198.154.248.248] 250-host299.hostmonster.com Hello localhost.localdomain [127.0.0.1]
[Sun Dec 20 19:09:25 2015] [error] [client 198.154.248.248] 250-SIZE 52428800
[Sun Dec 20 19:09:25 2015] [error] [client 198.154.248.248] 250-8BITMIME
[Sun Dec 20 19:09:25 2015] [error] [client 198.154.248.248] 250-AUTH PLAIN LOGIN
[Sun Dec 20 19:09:25 2015] [error] [client 198.154.248.248] 250-STARTTLS
[Sun Dec 20 19:09:25 2015] [error] [client 198.154.248.248] 250 HELP
[Sun Dec 20 19:09:25 2015] [error] [client 198.154.248.248] 250-host299.hostmonster.com Hello localhost [127.0.0.1]
[Sun Dec 20 19:09:25 2015] [error] [client 198.154.248.248] 250-SIZE 52428800
[Sun Dec 20 19:09:25 2015] [error] [client 198.154.248.248] 250-8BITMIME
[Sun Dec 20 19:09:25 2015] [error] [client 198.154.248.248] 250-AUTH PLAIN LOGIN
[Sun Dec 20 19:09:25 2015] [error] [client 198.154.248.248] 250-STARTTLS
[Sun Dec 20 19:09:25 2015] [error] [client 198.154.248.248] 250 HELP
[Sun Dec 20 19:09:25 2015] [error] [client 198.154.248.248] 250 OK
[Sun Dec 20 19:09:25 2015] [error] [client 198.154.248.248] 550-Verification failed for
[Sun Dec 20 19:09:25 2015] [error] [client 198.154.248.248] 550-No Such User Here
[Sun Dec 20 19:09:25 2015] [error] [client 198.154.248.248] 550 Sender verify failed
[Sun Dec 20 19:09:26 2015] [notice] [client 185.93.185.49] mod_rbl: 185.93.185.49 is listed in RBL.
[Sun Dec 20 19:09:26 2015] [error] [client 144.76.27.118] Zend Guard Loader requires Zend Engine API version 220100525.
[Sun Dec 20 19:09:26 2015] [error] [client 144.76.27.118] The Zend Engine API version 220131226 which is installed, is newer.
[Sun Dec 20 19:09:26 2015] [error] [client 144.76.27.118] Contact Zend Technologies at http://www.zend.com/ for a later version of Zend Guard Loader.
[Sun Dec 20 19:09:26 2015] [error] [client 144.76.27.118]
[Sun Dec 20 19:09:27 2015] [error] [client 198.154.248.248] 220-host299.hostmonster.com ESMTP Exim 4.84 #2 Sun, 20 Dec 2015 19:09:27 -0700
[Sun Dec 20 19:09:27 2015] [error] [client 198.154.248.248] 220-We do not authorize the use of this system to transport unsolicited,
[Sun Dec 20 19:09:27 2015] [error] [client 198.154.248.248] 220 and/or bulk e-mail.
[Sun Dec 20 19:09:27 2015] [error] [client 198.154.248.248] 250-host299.hostmonster.com Hello localhost.localdomain [127.0.0.1]
[Sun Dec 20 19:09:27 2015] [error] [client 198.154.248.248] 250-SIZE 52428800
[Sun Dec 20 19:09:27 2015] [error] [client 198.154.248.248] 250-8BITMIME
[Sun Dec 20 19:09:27 2015] [error] [client 198.154.248.248] 250-AUTH PLAIN LOGIN
[Sun Dec 20 19:09:27 2015] [error] [client 198.154.248.248] 250-STARTTLS
[Sun Dec 20 19:09:27 2015] [error] [client 198.154.248.248] 250 HELP
[Sun Dec 20 19:09:27 2015] [error] [client 198.154.248.248] 250-host299.hostmonster.com Hello localhost [127.0.0.1]
[Sun Dec 20 19:09:27 2015] [error] [client 198.154.248.248] 250-SIZE 52428800
[Sun Dec 20 19:09:27 2015] [error] [client 198.154.248.248] 250-8BITMIME
[Sun Dec 20 19:09:27 2015] [error] [client 198.154.248.248] 250-AUTH PLAIN LOGIN
[Sun Dec 20 19:09:27 2015] [error] [client 198.154.248.248] 250-STARTTLS
[Sun Dec 20 19:09:27 2015] [error] [client 198.154.248.248] 250 HELP
[Sun Dec 20 19:09:27 2015] [error] [client 198.154.248.248] 250 OK
[Sun Dec 20 19:09:27 2015] [error] [client 198.154.248.248] 550-Verification failed for
[Sun Dec 20 19:09:27 2015] [error] [client 198.154.248.248] 550-No Such User Here
[Sun Dec 20 19:09:27 2015] [error] [client 198.154.248.248] 550 Sender verify failed
[Sun Dec 20 19:09:29 2015] [error] [client 207.46.13.7] Zend Guard Loader requires Zend Engine API version 220100525.
[Sun Dec 20 19:09:29 2015] [error] [client 207.46.13.7] The Zend Engine API version 220131226 which is installed, is newer.
[Sun Dec 20 19:09:29 2015] [error] [client 207.46.13.7] Contact Zend Technologies at http://www.zend.com/ for a later version of Zend Guard Loader.
[Sun Dec 20 19:09:29 2015] [error] [client 207.46.13.7]
[Sun Dec 20 19:09:30 2015] [error] [client 198.154.248.248] 220-host299.hostmonster.com ESMTP Exim 4.84 #2 Sun, 20 Dec 2015 19:09:30 -0700
[Sun Dec 20 19:09:30 2015] [error] [client 198.154.248.248] 220-We do not authorize the use of this system to transport unsolicited,
[Sun Dec 20 19:09:30 2015] [error] [client 198.154.248.248] 220 and/or bulk e-mail.
[Sun Dec 20 19:09:30 2015] [error] [client 198.154.248.248] 250-host299.hostmonster.com Hello localhost.localdomain [127.0.0.1]
[Sun Dec 20 19:09:30 2015] [error] [client 198.154.248.248] 250-SIZE 52428800
[Sun Dec 20 19:09:30 2015] [error] [client 198.154.248.248] 250-8BITMIME
[Sun Dec 20 19:09:30 2015] [error] [client 198.154.248.248] 250-AUTH PLAIN LOGIN
[Sun Dec 20 19:09:30 2015] [error] [client 198.154.248.248] 250-STARTTLS
[Sun Dec 20 19:09:30 2015] [error] [client 198.154.248.248] 250 HELP
[Sun Dec 20 19:09:30 2015] [error] [client 198.154.248.248] 250-host299.hostmonster.com Hello localhost [127.0.0.1]
[Sun Dec 20 19:09:30 2015] [error] [client 198.154.248.248] 250-SIZE 52428800
[Sun Dec 20 19:09:30 2015] [error] [client 198.154.248.248] 250-8BITMIME
[Sun Dec 20 19:09:30 2015] [error] [client 198.154.248.248] 250-AUTH PLAIN LOGIN
[Sun Dec 20 19:09:30 2015] [error] [client 198.154.248.248] 250-STARTTLS
[Sun Dec 20 19:09:30 2015] [error] [client 198.154.248.248] 250 HELP
[Sun Dec 20 19:09:30 2015] [error] [client 198.154.248.248] 250 OK
[Sun Dec 20 19:09:30 2015] [error] [client 198.154.248.248] 550-Verification failed for
[Sun Dec 20 19:09:30 2015] [error] [client 198.154.248.248] 550-No Such User Here
[Sun Dec 20 19:09:30 2015] [error] [client 198.154.248.248] 550 Sender verify failed
[Sun Dec 20 19:09:30 2015] [notice] [client 185.93.185.49] mod_rbl: 185.93.185.49 is listed in RBL.
[Sun Dec 20 19:09:30 2015] [error] [client 144.76.27.118] Zend Guard Loader requires Zend Engine API version 220100525.
[Sun Dec 20 19:09:30 2015] [error] [client 144.76.27.118] The Zend Engine API version 220131226 which is installed, is newer.
[Sun Dec 20 19:09:30 2015] [error] [client 144.76.27.118] Contact Zend Technologies at http://www.zend.com/ for a later version of Zend Guard Loader.
[Sun Dec 20 19:09:30 2015] [error] [client 144.76.27.118]
[Sun Dec 20 19:09:32 2015] [notice] [client 185.93.185.49] mod_rbl: 185.93.185.49 is listed in RBL.
[Sun Dec 20 19:09:34 2015] [error] [client 144.76.27.118] Zend Guard Loader requires Zend Engine API version 220100525.
[Sun Dec 20 19:09:34 2015] [error] [client 144.76.27.118] The Zend Engine API version 220131226 which is installed, is newer.
[Sun Dec 20 19:09:34 2015] [error] [client 144.76.27.118] Contact Zend Technologies at http://www.zend.com/ for a later version of Zend Guard Loader.
[Sun Dec 20 19:09:34 2015] [error] [client 144.76.27.118]
[Sun Dec 20 19:09:34 2015] [error] [client 207.46.13.7] Zend Guard Loader requires Zend Engine API version 220100525.
[Sun Dec 20 19:09:34 2015] [error] [client 207.46.13.7] The Zend Engine API version 220131226 which is installed, is newer.
[Sun Dec 20 19:09:34 2015] [error] [client 207.46.13.7] Contact Zend Technologies at http://www.zend.com/ for a later version of Zend Guard Loader.
[Sun Dec 20 19:09:34 2015] [error] [client 207.46.13.7]
[Sun Dec 20 19:09:36 2015] [notice] [client 185.93.185.49] mod_rbl: 185.93.185.49 is listed in RBL.