Summary
We have now installed and configured a very efficient antivirus system for checking all incoming e-mails for infected attachments, and have significantly secured our systems—both the server and the workstation—against attack.
Our Mail Transport Agent, Postfix, can now filter all messages using the ClamAV daemon via the ClamSMTP content filtering interface, to scan and detect a wide range of threats against a database of virus signatures. Using freshclam, we have ensured that our detection database has been kept up-to-date to guard against the latest threats and any new viruses released. Constant vigilance is still required to make sure that software and files are always kept totally up-to-date in this ongoing battle.
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