UCD Email Servers rates our emails high for spam

Can we lower this?
Example:
 From: 2017 International Cycling Safety Conference <icsc2017@ucdavis.edu>
Subject: New Abstract Submitted
Date: January 9, 2017 at 12:02:38 AM PST
To: <xxxxx@ucdavis.edu>

Hello Mont Hubbard,

You have a new abstract for 2017 International Cycling Safety Conference
Abstract Title: safely bikefast
Abstract ID: 2

Regards,

ICSC 2017 Organizing Committee
2017 International Cycling Safety Conference
http://icsc2017.ucdavis.edu
8.0/5.0
This incoming message has been identified by the UCD central filters as
possible spam.  This attachment is provided so that you can review the
reasons the message was tagged, and to assist with additional filtering
if you wish to supplement the central filters with your own local rules.

If you have further questions please email ithelp@ucdavis.edu for
assistance.

Content analysis details:   (8.0 points, 5.0 required)

pts rule name              description
---- ---------------------- --------------------------------------------------
0.5 RCVD_IN_SORBS_SPAM     RBL: SORBS: sender is a spam source
                           [66.33.200.130 listed in dnsbl.sorbs.net]
2.7 RCVD_IN_PSBL           RBL: Received via a relay in PSBL
                           [66.33.200.130 listed in psbl.surriel.com]
3.5 BAYES_99               BODY: Bayes spam probability is 99 to 100%
                           [score: 1.0000]
-3.2 RP_MATCHES_RCVD        Envelope sender domain matches handover relay domain
0.2 BAYES_999              BODY: Bayes spam probability is 99.9 to 100%
                           [score: 1.0000]
0.1 HTML_MESSAGE           BODY: HTML included in message
0.7 MIME_HTML_ONLY         BODY: Message only has text/html MIME parts
0.6 DCC_REPUT_90_94        DCC reputation between 90 and 94 %
0.5 DCC_CHECK              Detected as bulk mail by DCC (dcc-servers.net)
0.4 HTML_MIME_NO_HTML_TAG  HTML-only message, but there is no HTML tag
2.0 TO_NO_BRKTS_HTML_ONLY  To: lacks brackets and HTML only
moorepants / icsc2017.ucdavis.edu

UCD Email Servers rates our emails high for spam #33
