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

SearchCompliance

  • information governance

    Information governance is a holistic approach to managing corporate information by implementing processes, roles, controls and ...

  • enterprise document management (EDM)

    Enterprise document management (EDM) is a strategy for overseeing an organization's paper and electronic documents so they can be...

  • risk assessment

    Risk assessment is the identification of hazards that could negatively impact an organization's ability to conduct business.

SearchSecurity

  • spam trap

    A spam trap is an email address that is used to identify and monitor spam email.

  • honeypot (computing)

    A honeypot is a network-attached system set up as a decoy to lure cyber attackers and detect, deflect and study hacking attempts ...

  • cracker

    A cracker is someone who breaks into someone else's computer system, often on a network; bypasses passwords or licenses in ...

SearchHealthIT

SearchDisasterRecovery

  • risk mitigation

    Risk mitigation is a strategy to prepare for and lessen the effects of threats faced by a business.

  • call tree

    A call tree is a layered hierarchical communication model that is used to notify specific individuals of an event and coordinate ...

  • Disaster Recovery as a Service (DRaaS)

    Disaster recovery as a service (DRaaS) is the replication and hosting of physical or virtual servers by a third party to provide ...

SearchStorage

  • cloud testing

    Cloud testing is the process of using the cloud computing resources of a third-party service provider to test software ...

  • storage virtualization

    Storage virtualization is the pooling of physical storage from multiple storage devices into what appears to be a single storage ...

  • erasure coding

    Erasure coding (EC) is a method of data protection in which data is broken into fragments, expanded and encoded with redundant ...

Close