Glossary

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This glossary summary article is in the process of being broken into individual articles. Once all of the information has been removed, this article will redirect to the Glossary category where all of these entries will be listed.

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# 0-9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

# 0-9 A B C D E

DNS-based Block List

A DNS-based Block List or DNSBL (sometimes referred to as an RBL) is a method of blocking spam by comparing the sender host's IP address against a list of known IP address sources of spam, as hosted and published by a DNSBL provider using specialized DNS records.

For more information see the DNSBL wiki article.

DNSBL

See DNS-based Block List.

DNSBL provider

A DNSBL provider is a hosting source for a DNS-based Block List. See DNS-based Block List for more information.

F G H I J K L

M N O P Q R S

No Processing

No Processing are lists of criteria that when matched will prevent a SMTP session from being processed by any blocking functions. No Processing are used to prevent needless additional filter processing as well as poisoning of the Bayesian database. However, there is an exception to this when blocking functions have No Processing override options.

ASSP matches can result from the functions: noProcessing, noProcessingDomains, noProcessingIPs, npRe, npSize

ASSP functions that can override No Processing: BlockNPExes, bombReNP, denySMTPConnectionsFromAlways, DoExtremeNP, DoFakedNP, ScanNP, SPFNP, URIBLNP

RBL

See DNS-based Block List.

Sender Policy Framework

Sender Policy Framework or SPF is a method of blocking spam by comparing the sender host's IP address against a list of authorized e-mail sources for the sender domain in a DNS TXT record containing SPF mechanism syntax, such as:

domain.tld IN TXT v=spf1 mx -all

For more information see the Sender Policy Framework wiki article.

SMTP status message

SMTP Status messages are messages that are sent to the connected system to indicate the current status of th e-mail transmission. ASSP allows the customization of status messages so that verbose descriptions and instructions may be added to assist the sender in case they are a legitimate sender.

For more information see the SMTP Status Codes wiki article.