34CHAPTER 3: CONFIGURING MAIL SECURITY
Attachment Control Attachment filtering can be used to control a wide range of problems originating from the use of attachments, including the following:
■Viruses — Attachments that can potentially contain viruses can be blocked.
■Offensive Content — The 3Com Email Firewall can block the transfer of images which reduces the possibility that an offensive picture will be transmitted to or from your company mail system.
■Confidentiality — Prevents unauthorized documents from being transmitted through the 3Com Email Firewall.
■Productivity — Prevents your systems from being abused by employees.
Select Mail Delivery
■Default action — Set the default attachment control action for items not specifically listed in the Attachment Types list. The default is “Pass” which allows all attachments. Any file types defined in the Attachment Types list will override the default setting.
■Enable Attachment Control — Select the check box to enable Attachment Control for inbound and/or outbound mail.
■Attachment Types — Click Edit to configure the attachment types.
■Action — Select an action to be performed. Options include:
■Just log: Log the event and take no further action.
■Reject mail: The message is rejected with notification to the sending system.
■Quarantine mail: The message is placed into quarantine.
■Discard mail: The message is discarded without notification to the sending system.
