University of Connecticut University of UC Title Fallback Connecticut

Spam and Virus Prevention

Spam is the use of electronic messaging systems to send unsolicited and often unwanted emails indiscriminately to a large number of users. Most spam contains advertisements for services or products; however, very few reputable marketers use unsolicited commercial email to advertise.

How am I protected?

Over 50% of the emails received by our network are a form of spam. Our spam and virus filters block the majority of these fraudulent message before they are delivered to your mailbox.

12-layers of protection image

On a daily basis, the University:

Processes approximately



Tags approximately


Spam Messages

Blocks approximately


Spam Messages

What is Phishing?

A specific type and potentially dangerous form of spam is phishing. With a phishing scam, users receive messages that appear to come from legitimate organizations and are designed to trick the recipient into divulging their credentials and other private information. If you receive a phishing message, report it to Once UITS receives a report, we begin the investigation and take steps to prevent future delivery of the message.

Learn more about phishing attacks »

Why am I getting spam emails in my inbox?

University spam filters do their best to remove all types of spam, but spam is an ever changing dynamic nuisance. If University spam filters fail to identify a piece of spam and deliver it to your mailbox, you have two choices. You can configure your mail client with rules to act on those emails when they are delivered or you can report the problem to the UITS Help Center so we can attempt to increase filtering accuracy.

Why was a legitimate email blocked and what can I do?

If your email was blocked by University spam filters, the filters may have given the message or its content such a high score it was blocked from delivery. Multiple factors can cause a message to get a high score and be marked as spam. Some common examples include:

  • Content in an email contains a possible threat, such as a hyperlink to a site known for sending spam
  • Sender Policy Framework (SPF) record look-up fails
  • An HTML email has problems with its code

Emails tagged as spam will have {SPAM?} prepended to the original subject by university spam filters.  The score is cumulative and so if multiple problems are present, even if individually a problem would not result in a high score, an email can get tagged as spam.  Making sure your emails are Request for Comments (RFC) compliant, which are the rules or best practices that are followed by the spam filter, will help avoid legitimate emails getting tagged.

If you feel that you are not receiving legitimate emails, contact the UITS Help Center. To initiate the process, the Help Center will ask you check all folders in your mailbox to confirm that the email was not delivered. If the email was not delivered, they will then ask you to give them, at a minimum, the To, From, Subject, and Date of the message. If you have the email header, which gives the Help Center the most information, you should share that. The header contains details about the message, including the sender’s information, the recipient’s information, and the servers that handled the message as it traveled from the sender to the recipient.

Below is an example of a full email header.

Return-Path: <>
X-SpamCatcher-Score: 1 [X]
Received: from [] (HELO
by (CommuniGate Pro SMTP 4.1.8)
with ESMTP-TLS id 61258719 for; Mon, 23 Aug 2004 11:40:10 -0400
Message-ID: <>
Date: Mon, 23 Aug 2014 11:40:36 -0400
From: Taylor Evans <>
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.0.1) Gecko/20020823 Netscape/7.0
X-Accept-Language: en-us, en
MIME-Version: 1.0
To: Jon Smith <>
Subject: Business Development Meeting
Content-Type: text/plain; charset=us-ascii; format=flowed
Content-Transfer-Encoding: 7bit


If you have any questions or need further assistance regarding spam and virus protection. Please contact the UITS Help Center at 860.486.4357 or email For any other support or to find your local IT contact, visit the Contact Your Local IT Support page.