IronPort - Configuration Guide - AsyncOS 7.6.1

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Q Glossary Queue In the Cisco IronPort appliance, you can delete, bounce, suspend, or redirect messages in the email queue. This email queue of messages for destination domains is also referred to as the delivery queue. The queue of messages waiting to be processed by IronPort Anti-Spam or message filter actions is referred to as the work queue. You can view the status of both queues using the status detail command. R RAT Recipient Access Table. The Recipient Access Table defines which recipients will be accepted by a public listener. The table specifies the address (which may be a partial address or hostname) and whether to accept or reject it. You can optionally include the SMTP response to the RCPT TO command for that recipient. The RAT typically contains your local domains. Rate Limiting Rate limiting limits the maximum number of messages per session, the maximum number of recipients per message, the maximum message size, the maximum recipients per hour, and the maximum number of concurrent connections you are willing to accept from a remote host. RCPT TO See Envelope Recipient. Receiving The act of receiving email messages on a specific listener configured on an IP interface. The Cisco IronPort appliance configures listeners to receive email messages — either inbound from the Internet, or outbound from your internal systems. Reputation Filter A way of filtering suspicious senders based on their reputation. The SenderBase Reputation Service provides an accurate, flexible way for you to reject or “throttle” suspected spam based on the connecting IP address of the remote host. S Sender Group A sender group is simply a list of senders gathered together for the purposes of handling email from those senders in the same way (that is, applying a mail flow policy to a group of senders). A sender group is a list of senders (identified by IP address, IP range, host/domain, SenderBase Reputation Service classification, SenderBase Reputation score range, or DNS List query response) separated by commas in a listener’s Host Access Table (HAT). You assign a name for sender groups, as well as mail flow policies. Soft Bounced Message GL-6 A message whose delivery will be reattempted at a later time base on the configured maximum number of retries or maximum time in queue. Cisco IronPort AsyncOS 7.6 for Email Configuration Guide OL-25136-01
Spam Unwanted, Unsolicited Commercial bulk Email (UCE/UBE). Anti-spam scanning identifies email messages that are suspected to be spam, according to its filtering rules. STARTTLS Transport Layer Security (TLS) is an improved version of the Secure Socket Layer (SSL) technology. It is a widely used mechanism for encrypting SMTP conversations over the Internet. The IronPort AsyncOS operating system supports the STARTTLS extension to SMTP (Secure SMTP over TLS), described in RFC 2487. T TOC Threat Operations Center. This refers to all the staff, tools, data and facilities involved in detecting and responding to virus outbreaks. W Whitelist A list of known good senders. Add senders you trust to the Whitelist sender group. The $TRUSTED mail flow policy is configured so that email from senders you trust has no rate limiting enabled, and the content from those senders is not subject to anti-spam scanning. OL-25136-01 Cisco IronPort AsyncOS 7.6 for Email Configuration Guide Glossary GL-7
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IronPort - Configuration Guide - AsyncOS 7.6.1

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