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  Anti-Virus & Anti-Spam Mail System

  Due to the ever-increasing volume of spam and the limited effectiveness of our existing solutions, CSC has implemented a commercial Anti-Spam and Anti-Virus Email Security Gateway solution. This Email Security Gateway is quite effective and it generates almost no false positives (legitimate messages that are mis-identified as spam).
  The new Email Security Gateway identifies SPAM at two layers. The first layer is sender-based reputation filtering (identifies Positive Spam) and the second layer is content-based filtering (identifies Suspected Spam).
  For staff email accounts:

When the emails are identified as suspected spam, instead of delivering them with *****SPAM***** tag in the subject, the new anti-spam service will send a weekly summary report with information about those spam emails to users’ inboxes.  The suspected spam emails will be held in a “quarantine” server separately.    If the user founds the quarantined email is legitimate email, the user can release it following the instructions in the daily summary report.

  The earliest suspected spam emails in the quarantine server will be removed after 21 days, or when the quarantine server exceeds the 5GB storage limit. 
The daily summary report will be sent to each user at 6 a.m. on weekdays.
  For student's email accounts:

Due to the volume of students email accounts, suspected spam messages will not be held in the quarantine server but will be delivered with *****SPAM***** tag in the email subject header.

  Students can simply setup an email filter in the email client or in Webmail to filter such tagged spam emails.   For more information on setting up the email filter, please refer to:
Frequently Asked Questions
  How does the system identifies Spam?
  Can I stop receiving mail from specific senders?
  Can I prevent the system from scanning mail from specific senders?
  How to release mail from the spam quarantine server?
  How to access the safelist and the blocklist?
  How to add entries to the safelist?
  How to add entries to the blocklist?
  Should you have further questions, you may contact CSC by sending email to or submit a service request online via SRMS.

Last updated: by Computer Service Centre.