Browse Definitions :
Definition

Vouch by Reference (VBR)

Vouch By Reference (VBR) is a protocol for adding third-party certification to email. The protocol has two parts, one for the sender and one for the receiver.

The first part of the protocol requires the sender to add information to their email header by creating a field called VBR-Info. The information in the field tells the receiver three things:

  • The sender's domain.
  • The type of content the message contains.
  • A list of domain names for services that the sender expects will vouch for the legitimacy of the email.

The second part of the protocol requires the recipient to compare the list of services VBR-Info provides with a list of services the recipient trusts. The recipient then queries each service that is common to both lists: the service uses information the domain owner has registered with the domain name service (DNS) to determine whether the sender's IP address is legitimate and whether the content type is approved.

If VBR becomes widely adopted, it will provide the recipient with another way to fine-tune spam scores on incoming email and allow the sender to increase the odds that an email will arrive safely in the recipient's inbox. Before the protocol can become successful, however, it must be accepted and deployed by senders, receivers, certification providers, and mail server and anti-spam software vendors.

Read more:

The Vouch by Reference protocol is being promoted by the Domain Assurance Council (DAC).

The Vouch by Reference protocol is RFC 5518.

This was last updated in November 2009

Continue Reading About Vouch by Reference (VBR)

Start the conversation

Send me notifications when other members comment.

Please create a username to comment.

-ADS BY GOOGLE

File Extensions and File Formats

Powered by:

SearchCompliance

  • regulatory compliance

    Regulatory compliance is an organization's adherence to laws, regulations, guidelines and specifications relevant to its business...

  • privacy compliance

    Privacy compliance is a company's accordance with established personal information protection guidelines, specifications or ...

  • data governance policy

    A data governance policy is a documented set of guidelines for ensuring that an organization's data and information assets are ...

SearchSecurity

  • asymmetric cryptography (public key cryptography)

    Asymmetric cryptography, also known as public-key cryptography, is a process that uses a pair of related keys -- one public key ...

  • Evil Corp

    Evil Corp is an international cybercrime network that uses malicious software to steal money from its victims' bank accounts.

  • Plundervolt

    Plundervolt is a method of hacking that involves depriving an Intel chip of power so that processing errors occur.

SearchHealthIT

  • telemedicine (telehealth)

    Telemedicine is the remote delivery of healthcare services, such as health assessments or consultations, over the ...

  • Project Nightingale

    Project Nightingale is a controversial partnership between Google and Ascension, the second largest health system in the United ...

  • medical practice management (MPM) software

    Medical practice management (MPM) software is a collection of computerized services used by healthcare professionals and ...

SearchDisasterRecovery

SearchStorage

  • M.2 SSD

    An M.2 SSD is a solid-state drive (SSD) that conforms to a computer industry specification written for internally mounted storage...

  • RAID (redundant array of independent disks)

    RAID (redundant array of independent disks) is a way of storing the same data in different places on multiple hard disks or ...

  • cache memory

    Cache memory, also called CPU memory, is high-speed static random access memory (SRAM) that a computer microprocessor can access ...

Close