made that change; here is the error message:
6:54:29.962: [*] SSL/TLS session established
16:54:29.962: [*] ECDHE-RSA-AES256-GCM-SHA384, TLSv1.2, Kx=ECDH, Au=RSA, Enc=AESGCM(256), Mac=AEAD
16:54:29.962: [*] Peer's certificate name is '/C=US/postalCode=19103/ST=PA/L=Philadelphia/street=1 Comcast Center/O=Comcast Corporation/OU=Business Center/OU=Hosted by Comcast Corporation/OU=Unified Communications/CN=smtp.comcast.net'.
16:54:29.962: << EHLO [10.0.0.53]
16:54:29.994: >> 250-resomta-ch2-11v.sys.comcast.net hello [65.96.103.95], pleased to meet you
16:54:29.994: >> 250-HELP
Or:
6:56:16.117: >> 250-STARTTLS
16:56:16.117: >> 250 OK
16:56:16.117: << STARTTLS
16:56:16.164: >> 220 2.0.0 Ready to start TLS
16:56:17.429: [*] SSL/TLS session established
16:56:17.429: [*] ECDHE-RSA-AES256-GCM-SHA384, TLSv1.2, Kx=ECDH, Au=RSA, Enc=AESGCM(256), Mac=AEAD
16:56:17.429: [*] Peer's certificate name is '/C=US/postalCode=19103/ST=PA/L=Philadelphia/street=1 Comcast Center/O=Comcast Corporation/OU=Business Center/OU=Hosted by Comcast Corporation/OU=Unified Communications/CN=smtp.comcast.net'.
16:56:17.429: << EHLO [10.0.0.53]
16:56:17.460: >> 250-resomta-ch2-04v.sys.comcast.net hello [65.96.103.95], pleased to meet you
16:56:17.460: >> 250-HELP
16:56:17.460: >> 250-AUTH LOGIN PLAIN XOAUTH2
16:56:17.460: >> 250-SIZE 36700160
16:56:17.460: >> 250-ENHANCEDSTATUSCODES
16:56:17.460: >> 250-8BITMIME
16:56:17.460: >> 250 OK
16:56:17.460: << AUTH LOGIN
16:56:17.538: >> 334 VXNlcm5hbWU6
16:56:17.538: << YXJ0bGF5dG9u
16:56:17.570: >> 334 UGFzc3dvcmQ6
16:56:17.570: << aGVucnlkb2cx
16:56:17.664: >> 535 5.7.0 ...authentication rejected (6)
<p>made that change; here is the error message:&nbsp;</p><p>6:54:29.962: [*] SSL/TLS session established</p><p>16:54:29.962: [*] ECDHE-RSA-AES256-GCM-SHA384, TLSv1.2, Kx=ECDH, Au=RSA, Enc=AESGCM(256), Mac=AEAD</p><p>16:54:29.962: [*] Peer's certificate name is '/C=US/postalCode=19103/ST=PA/L=Philadelphia/street=1 Comcast Center/O=Comcast Corporation/OU=Business Center/OU=Hosted by Comcast Corporation/OU=Unified Communications/CN=smtp.comcast.net'.</p><p>16:54:29.962: &lt;&lt; EHLO [10.0.0.53]</p><p>16:54:29.994: &gt;&gt; 250-resomta-ch2-11v.sys.comcast.net hello [65.96.103.95], pleased to meet you</p><p>16:54:29.994: &gt;&gt; 250-HELP</p><p>&nbsp;</p><p>Or: </p><p>&nbsp;6:56:16.117: &gt;&gt; 250-STARTTLS</p><p>16:56:16.117: &gt;&gt; 250 OK</p><p>16:56:16.117: &lt;&lt; STARTTLS</p><p>16:56:16.164: &gt;&gt; 220 2.0.0 Ready to start TLS</p><p>16:56:17.429: [*] SSL/TLS session established</p><p>16:56:17.429: [*] ECDHE-RSA-AES256-GCM-SHA384, TLSv1.2, Kx=ECDH, Au=RSA, Enc=AESGCM(256), Mac=AEAD</p><p>16:56:17.429: [*] Peer's certificate name is '/C=US/postalCode=19103/ST=PA/L=Philadelphia/street=1 Comcast Center/O=Comcast Corporation/OU=Business Center/OU=Hosted by Comcast Corporation/OU=Unified Communications/CN=smtp.comcast.net'.</p><p>16:56:17.429: &lt;&lt; EHLO [10.0.0.53]</p><p>16:56:17.460: &gt;&gt; 250-resomta-ch2-04v.sys.comcast.net hello [65.96.103.95], pleased to meet you</p><p>16:56:17.460: &gt;&gt; 250-HELP</p><p>16:56:17.460: &gt;&gt; 250-AUTH LOGIN PLAIN XOAUTH2</p><p>16:56:17.460: &gt;&gt; 250-SIZE 36700160</p><p>16:56:17.460: &gt;&gt; 250-ENHANCEDSTATUSCODES</p><p>16:56:17.460: &gt;&gt; 250-8BITMIME</p><p>16:56:17.460: &gt;&gt; 250 OK</p><p>16:56:17.460: &lt;&lt; AUTH LOGIN</p><p>16:56:17.538: &gt;&gt; 334 VXNlcm5hbWU6</p><p>16:56:17.538: &lt;&lt; YXJ0bGF5dG9u</p><p>16:56:17.570: &gt;&gt; 334 UGFzc3dvcmQ6</p><p>16:56:17.570: &lt;&lt; aGVucnlkb2cx</p><p>16:56:17.664: &gt;&gt; 535 5.7.0 ...authentication rejected (6)</p><p><span style="font-size: 10pt;">&nbsp;</span></p>