Glossary of Terms - AppRiver

A Record – Address record. Most commonly used to map hostnames to an IP address of the host.

 – A Microsoft program that manages synchronization of information, including e-mail, schedules, and application files, between a mobile device and a desktop PC and/or laptop that runs Microsoft Exchange Server. 

Allowed List – An email allowed list is a list of contacts and/or domains that the user deems are acceptable to receive e-mail from.

 – AppRiver Global Domain Block List

 – A software development phase that is useful for internal demonstrations and previews to specific customers.  It reduces the impact of releasing versions of software that might not be user friendly or might have bugs, thus making it easier for end users to use the new software in a trouble free manner.

Blackberry Enterprise Server (BES)
 – A designated server, which is part of a proprietary network that was created by Research in Motion (RIM).  A BES provides communication between Microsoft Exchange and Blackberry mobile devices.

Blackberry Internet Service (BIS)
 – This service allows BlackBerry users to access Web-based POP3, IMAP, and Outlook Web App (not via Exchange ActiveSync) e-mail accounts without connecting through a BlackBerry Enterprise Server.

Blocked List
 – A blocked list is a list or register of persons who, for one reason or another, are being denied a particular privilege, service, mobility, access, or recognition.

 – Jargon term for a collection of software robots or bots that runs autonomously and automatically. The term is often associated with malicious software, but it can also refer to the network of computers using distributed computing software. This word refers to a collection of compromised computers (e.g., Zombie computers) that run software, usually installed via worms, Trojan horses, or backdoors, under a common command-and-control infrastructure. The majority of these computers are running Microsoft Windows operating systems, but other operating systems can be affected.

 – Canonical name record, also known as an alias, defines an alternate name for a primary domain name. This is helpful when running multiple services (like an FTP and a  Web server; each running on different ports) from a single IP address. Each service can then have its own entry in DNS ( Additionally, network administrators also use CNAMEs when running multiple HTTP servers on the same port, with different names, on the same physical host. This however requires host headers support for the two sites to both listen on the default port (port 80).

Cloud Computing
 – Cloud computing describes a new supplement, consumption, and delivery model for IT services based on the Internet, and it typically involves over-the-Internet provision of dynamically-scalable and often virtualized resources.

Customer Portal
 – AppRiver’s innovative new user interface that manages all of our in-the-cloud security services.

Digital Disaster Preparedness Program
 – A FREE service offered to businesses by AppRiver. This service protects and preserves incoming e-mail should that company's e-mail server stop functioning due to hurricane-related, or other catastrophic event, damage. Once the e-mail server stops responding, AppRiver will queue the business' incoming e-mail messages until the server is fully functioning or the user requests for the e-mail to be redirected to another server. You can learn more on about this program on

 – A sphere on the Internet wherein a set of unique addresses on the Internet exist or collection of network services organized under a common network name.  Domains are purchased from a Registrar and are administered by a DNS provider.  Examples:,, or,

Domain Alias
 – A secondary domain name that is associated with another primary domain on AppRiver services. Mail for this secondary domain directs mail to an existing e-mail account on AppRiver’s server under an existing primary domain name.

Domain Name System (DNS)
 – Associates various information with domain names, which provides an easy system to convert domain names to unique addresses and unique addresses to domain names via various identifying records.  The DNS serves as the phonebook for the Internet and translates human-readable hostnames (e.g., into IP addresses, which networking equipment needs to deliver information. The DNS also stores information regarding mail servers that accept e-mail for a given domain (i.e., Mail eXchanger Record).  

Email Alias
 – A new account name that is used in conjunction with a primary e-mail account name.  For example, may have an e-mail alias of E-mail sent to the alias e-mail account name will be delivered to the primary e-mail account’s mailbox.

Email Archiving (Often referred to as archiving)
 – The process of systematically recording and saving copies of e-mail correspondence for records keeping and documentation purposes.

Email Continuity Service (ECS)
 – This service is offered by AppRiver and designed to help businesses avert e-mail downtime with a rapid response hosted account for on-demand e-mail access in the event of outage.  ECS gives subscribers fast, automated access to new email messages, along with 30 days of rolling e-mail.

Email Filtering Service
 – An anti spam service that automatically checks the e-mail inbox to collect e-mail to processing.  E-mail filtering can sometimes be referred to as e-mail blocking.

Email Encryption
 – A service allowing one user to encrypt a message so that it is only readable by the recipient. As an example:  An Accounting manager sends an e-mail to an HR manager about a payroll issue.  Before encryption, an Exchange administrator or other technicians with admin rights would be able to log into either persons e-mail account and read the message if it is stored in clear text.  Now, with e-mail encryption, the message is only viewable with a second set of credentials via a Web interface or via the user's computer that has a decryption key already installed.

Exchange Alias
 – See Domain Alias

 – E-mail server platform that allows syncing information between desktops, server, and the Internet. This includes the synchronization of e-mail, calendars, and contacts to workstations, mobile devices, and Outlook Web Access.

 – The spam filtering framework that runs Email Threat Protection, which allows AppRiver to run all filters and tests, while also performing all aspects of filtering on a mail server.

 – The capability to switch over automatically to a redundant or standby server upon the failure of the previous active server. Failover happens without human intervention and generally without warning.

False Positive
 – A false positive occurs when spam filtering or spam blocking techniques wrongly classify a legitimate e-mail message as spam and, as a result, interferes with its delivery.

GAL (Global Address List)
 – A directory service within the Microsoft Exchange e-mail system. The GAL contains information for all e-mail users, distribution groups, and Exchange resources.

Good Technology (formerly known as GoodLink)
 – Synchronizes corporate e-mail and PIM (personal information manager) data on a variety of devices, as well as a variety of other mobile management; security and access products targeted at the mobile enterprise worker.

Headers (also Message Headers)
 – Code within an e-mail that contains specific information about the path that the e-mail took from the sender to the recipient. Additional information that can be determined from headers includes sender, recipient and server names, timestamps, and also spam tests that were applied (and their results). Follow these tips to obtain headers in your mail client.  

Hosted Exchange (HEX)
 – Hosted Exchange is a version of Exchange from Microsoft that offers an quick and easy way to deploy Exchange for your organization. Hosted Exchange is deployed over the Internet, so there is no need to modify your existing e-mail infrastructure, install and maintain any new hardware or specialized software, or invest in training for IT staff or end users.  

 – An unique name by which a network-attached device is known on a network. Sometimes hostname and domain name are interchangeable. The names most people see and use for identifying a sphere of control on the Internet such as domains like  Hostnames are human-readable nicknames, which refer to a unique network address.

 – Originally the term applied to software patches that were applied to live running systems. Generally, it is known as a single, cumulative package that includes one or more files that are used to address a problem in a software product (ex. a software bug).

Hypertext Transfer Protocol (HTTP)
 – HTTP is a communications protocol for the transfer of information on the Internet. This protocol is used to carry requests from a browser to a Web server and to transport pages from Web servers back to the requesting browser.

Hypertext Transfer Protocol Secure (HTTPS)
 – A variation of HTTP that provides for encryption and transmission through a secure port.  

Internet Message Access Protocol (IMAP)
 – IMAP can be thought of as a remote file server and is a standard protocol for accessing email from your local server. IMAP is a client/server protocol in which e-mail is received and held for you by your Internet server. IMAP requires continual access to the server during the time that you are working with your e-mail.  AppRiver uses CommuniGate for IMAP services. Version 4 latest version of IMAP.  

Inbound Filtering
 – An advanced method of controlling data received from the Internet. Inbound filters are used to limit access to a server on a network to a system or group of systems. The Email Threat Protection product utilizes over 60 filtering tactics to keep inbound and outbound mail safe from Spam, worms, and viruses.

Internet Service Provider (ISP)
 – An organization offering and providing Internet access to the public using computer servers connected directly to the Internet.

Internet Protocol (IP)
 – This protocol is used to communicate data across a packet-switched internetwork using the Internet Protocol Suite (TCP/IP).  It has the task of delivering datagrams (packets) from the source host to the destination host solely based on its address. For this purpose the Internet Protocol (IP) defines addressing methods and structures for datagram encapsulation. The first major version of addressing structure, now referred to as Internet Protocol Version 4 (IPv4) is still the dominant protocol of the Internet.

IP Address
 – An identification number (logical address) that is assigned to devices participating in a computer network utilizing the IP for communication between its nodes, e.g.,

Knowledgebase (KB)
 – A form of database used in specific systems, which contain a computerized collection, organization, and retrieval of knowledge. AppRiver’s KB is online in the self-help section at  

Lightweight Directory Access Protocol (LDAP)
 – An Internet protocol that e-mail and other programs use to look up information on a server.

Mail Bagging
 – A temporary storage queue for e-mails before they are transferred to a specific IP/domain if the SMTP connection is inaccessible.  Standard Mail Bagging for AppRiver is 48 hours.  The duration for mail bagging can be extended indefinitely on customer request.  This can be accomplished by manually placing the IP/Domain on hold. Mail Bagging can also serve as an MX back-up solution.  However, since AppRiver already controls a client’s/customer’s MX records, defining Mail Bagging as a backup is less applicable for AppRiver.

Mail Exchanger Record (MX Record)
 – A type of resource record in DNS specifying how e-mail should be routed using SMTP (Secure Mail Transfer Protocol).  Each MX record contains a priority (Examples: MX 10 or MX 20) and hostname ( so the collection of MX records for a given domain name ( will point to the correct servers receiving e-mail for that domain.  

Mail Route
 – A specific line of text that gives AppRiver mail servers instructions on where to deliver e-mail messages.

 – From the words malicious and software, is software designed to infiltrate or damage a computer system without the owner's informed consent. The expression is a general term used by computer professionals to mean a variety of forms of hostile, intrusive, or annoying software or program code.

Messaging Application Programming Interface (MAPI)
 – This is a protocol used for Outlook to communicate with an Exchange server.
Message Sniffer®
 – Message Sniffer is an AppRiver product. It is a spam detection engine available as a SDK. It uses advanced pattern recognition technology and a regularly updated rules database to accurately identify spam.

Name Server Lookup (NS Lookup)
 – A command typically used to search and find DNS records.  

Name Server
 – Consists of a program or computer server that implements a name-service protocol. It will normally map (i.e., connect) a human-recognizable identifier of a host (for example, the domain name '') to its computer-recognizable identifier (such as the Internet Protocol (IP) address, and vice versa.

 – This is a file created by Outlook to store e-mail address information for the autocomplete process when typing e-mail addresses in new messages. This file is not profile unique.
 – Original Equipment Manufacturer

OST (.ost)
 – This is a file type created by Microsoft Outlook™ to synchronize with Exchange. This data file creates an offline folder which ensures changes made while offline can be synchronized when Outlook and the Exchange server can connect.

Outlook Web Access (OWA)
 – The Web-based version of Microsoft Outlook provided for staff to read email from any computer with Internet access.

 – The criminally fraudulent process of attempting to acquire sensitive information such as usernames, passwords and credit card details, by masquerading as a trustworthy entity in an electronic communication.  Phishing is typically carried out by e-mail or instant messaging.

POP/POP3 or Post Office Protocol 3 (Pop version 3)
 – POP can be thought of as a store-and-forward service and can be defined as a client/server protocol in which e-mail is held for users by their Internet server.  POP mail is designed to delete mail from the server as soon as the e-mail has been downloaded or viewed.  POP3 is the most recent version of a standard protocol for receiving e-mail.

Port 80 Filtering
 – This type of filtering monitors all packets that use port 80 (the port requests Web pages almost always comes through) for potential attacks.

 – The steps required to manage the setup of user access to relative data or electronic services.

Proxy Server
 – A server that services the requests of its clients by forwarding requests to different servers.

PST (.pst)
 – This is a personal folder file created by Outlook for mailboxes that do not connect using Exchange.

PTR Record
 – Pointer Record.  Pointer to a canonical name. Unlike a CNAME, DNS processing does NOT proceed, just the name is returned. The most common use is for implementing reverse DNS lookups by putting a PTR record for a hostname in the domain that corresponds to an IP address. For example (at the time of writing), has the IP address, but a PTR record maps to its canonical name,

Quarantined Message Report (QMR)
 – Daily Spam report

 – A company authorized to register Internet domain names.

Remote Desktop
 – Allows AppRiver support technicians to securely connect to a workstation or server and perform tasks as if they were physically present at the remote computer.

RIM (Research in Motion)
 – The company that developed BlackBerry phones, BES, and BIS.

Email Threat Protection
 – An AppRiver product that prevents Spam, phishing scams, viruses, and other Internet pollution from impacting e-mail operations.

Secure Sockets Layer (SSL)
 – Established industry standard that encrypts the channel between a web browser and web server to ensure the privacy and reliability of data transmitted over this channel.  SSL uses digital certificates to authenticate the identity of a Web site and encrypts the information using SSL technology.  Each SSL Certificate consists of a public key and a private key. The public key is used to encrypt information and the private key is used to decrypt information.

 – AppRiver’s internally developed solution for Web protection. The service filters websites and provides malware protection to networks.

Simple Mail Transfer Protocol (SMTP)
 – A standard for electronic mail (e-mail) transmissions across the Internet. The protocol in widespread use today is also known as Extended SMTP (ESMTP).  While electronic mail server software uses SMTP to send and receive e-mail messages, user-level client mail applications typically only use SMTP for sending messages to a mail server for relaying. For receiving messages, client applications usually use either the Post Office Protocol (POP) or the Internet Message Access Protocol (IMAP) to access their mail box accounts on a mail server.

 – A type of mail relay server that allows an SMTP server to route e-mail to an intermediate mail server rather than directly to the recipient’s server. Found in ARBO, an AppRiver service that processes outgoing e-mail for spam content, viruses, mail rules, and disclaimers.

Software Development Kit (SDK)
 – A set of programming tools used to provide functionality for other applications.  An SDK is a set of tools that do not really have functionality on their own, but provide functionality to other software.  Example: Message Sniffer® is a SDK

 – SpearPhishing is a targeted attack where a cyber criminal picks a victim and goes after them specifically and directly. This is different than regular Phishing because regular Phishing is like casting a net, they just send it out to everyone and hope they get a few bites. With SpearPhishing, the cyber criminals tend to make their attacks in a customized fashion for their target. Oftentimes, the initial contact is made through a phone call where the attacker uses a bit of social engineering to collect information about their target. This malware is usually customized, which means that anti-virus software may not be able to detect it.

SPF Record
 – Sender Policy Framework (SPF) is an open standard specifying a technical method to prevent sender address forgery. More precisely, the current version of SPF — called SPFv1 or SPF Classic — protects the envelope sender address, which is used for the delivery of messages. The SPF Record is specified as part of the SPF protocol, as an alternative to storing SPF data in TXT records.

Split-Domain Routing
 – A setting in the Customer Portal (applies to only Hosted Exchange accounts), which routes e-mail from Hosted Exchange to an external server.  This is typically used during the free trial so that any incoming mail for any address other than Exchange account is sent to a client’s server (or sometimes our POP3 server).  During the trial, typically a client will put one or two users on AppRiver’s Exchange then set-up a split-domain routing to deliver mail for other users to their existing server.

 – Generated by a client to address an issue related to an AppRiver service or product. Tickets can be submitted from the AppRiver  Web site, the AppRiver support system, e-mail, or transferred/generated internally by employees on behalf of a customer.

Transport Layer Security (TLS)
 – TLS is a cryptographic or encryption protocol that provides security for communications over networks (or server to server) such as the Internet. In typical end-user/browser usage, TLS authentication is unilateral or one-sided: meaning only the server is authenticated (the client knows the server's identity), but not vice versa (the client remains unauthenticated or anonymous). However, TLS also supports a more secure bilateral or two-sided connection mode (typically used in enterprise applications), in which both ends of the conversation are verified before communicating (provided they diligently scrutinize the identity information in the other party's certificate). This is known as mutual authentication. Mutual authentication requires that the client-side TLS also hold a certificate.

TXT record
 – Originally for arbitrary human-readable text in a DNS record. Since the early 1990s, however, this record more often carries machine-readable data, such as specified by RFC 1464, opportunistic encryption, Sender Policy Framework and Domain Keys.

Uniform Resource Locator (URL)
 – Specifies where an identified resource is available and the mechanism for retrieving it. URLs are the addresses of web pages on the World Wide Web. (Ex.

User Interface (UI)
 – The user interface (or Human Computer Interface) is the aggregate of means by which people interact with a system—a particular machine, device, computer program or other complex tool. The user interface provides means of: Input, allowing the users to manipulate a system and Output, allowing the system to produce the effects of the users' manipulation.

Weekly Domain Report (WDR)
 – Reports received weekly by a domain’s administer(s) or anyone designated to receive them. These reports contain spam filtering information only (even if the client has Exchange).

WHO IS – References the questions:  “Who owns this domain?”  A WHO IS Search provides domain name registration information, which includes:  registrant information, DNS, and expiration dates.