
	Vouch by Reference (VBR)


	Home > Microsoft Exchange Definitions - Vouch by Reference (VBR)

SearchExchange.com Definitions (Powered by WhatIs.com)

EMAIL THIS

LOOK UP TECH TERMS		Powered by:

Browse tech terms alphabetically:

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 #

Vouch by Reference (VBR)

Show me everything on User Authentication for Microsoft Outlook and OWA

Word of the Day

- Vouch by Reference (VBR) is an e-mail header tagging mechanism whereby senders can list third parties known as domain certification services that will attest to their integrity and good standing in the Internet community. When a sender includes a vouch-by-reference (VBR) list in an e-mail header, recipients (or intermediate servers) can look up VBR vouchers through the domain name service (DNS), to determine whether trusted third parties find the sender to be reputable. VBR makes it possible to bypass spam filtering, assuming that the recipient is willing to take the word of the voucher that the sender is legitimate.

Vouch by reference uses the domain name in the sender's e-mail address (the part that follows the at symbol) to determine the sender's domain of origin. To avoid spoofing or prevent forgery, VBR relies upon sender authentication schemes such as DomainKeys Identified Mail (DKIM), the Sender Policy Framework (SPF) or Sender ID to prove that claimed identity and actual identity match.

Learn more about User Authentication for Microsoft Outlook and OWA

Create a secure Microsoft Outlook Web Access (OWA) redirect page: Microsoft Outlook Web Access (OWA) users get an error when typing HTTP instead of HTTPS. Create an OWA redirect to take them to an SSL-enabled OWA website.
How to improve Outlook Web Access (OWA) security: Two big Outlook Web Access security issues are email attachments and OWA user authentication. Get tips on how to improve Outlook Web Access security here.
Lock down direct file access and protect OWA users: Built-in OWA security features may not be enough to secure direct file access. If you can't disable the feature, what's the next best security measure?
Top 5 Outlook Web Access (OWA) tips of 2008: Looking for helpful Microsoft Outlook Web Access tips? Learn how to customize an OWA authentication logon, create a secure OWA redirect page and more here.
How to improve Outlook Web Access (OWA) security: Two big Outlook Web Access security issues are email attachments and OWA user authentication. Get tips on how to improve Outlook Web Access security here.
Obtaining and verifying SSL certificates in Exchange Server: Exchange Server admins should be familiar with SSL. If you need to obtain a trusted certificate, follow these steps to further harden SSL-based apps.
Create a secure Microsoft Outlook Web Access (OWA) redirect page: Microsoft Outlook Web Access (OWA) users get an error when typing HTTP instead of HTTPS. Create an OWA redirect to take them to an SSL-enabled OWA website.

LAST UPDATED:

11 Oct 2007

Do you have something to add to this definition? Let us know.
Send your comments to techterms@whatis.com

More resources from around the web:

-	The Domain Assurance Council provides a Vouch by Reference (VBR) Overview.

FILE EXTENSION AND FILE FORMAT LIST
File Extension and File Format List:
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 #

RELATED CONTENT

	Lock down direct file access and protect OWA users Built-in OWA security features may not be enough to secure direct file access. If you can't disable the feature, what's the next best security...
	Obtaining and verifying SSL certificates in Exchange Server Exchange Server admins should be familiar with SSL. If you need to obtain a trusted certificate, follow these steps to further harden SSL-based apps.
	Top 5 Outlook Web Access (OWA) tips of 2008 Looking for helpful Microsoft Outlook Web Access tips? Learn how to customize an OWA authentication logon, create a secure OWA redirect page and more...

RELATED GLOSSARY TERMS

Terms from Whatis.com − the technology online dictionary

greylist (SearchExchange.com)
A greylist (also spelled graylist) is a list of e-mail addresses or domain names that a spam filter uses to identify suspected spam. If a message...

Sender ID (SearchExchange.com)

Vouch by Reference (VBR) Solutions - Microsoft Exchange White Papers

SEARCH

TechTarget provides technology professionals with the information they need to perform their jobs - from developing strategy, to making cost-effective purchase decisions and managing their organizations' technology projects - with its network of technology-specific websites, events and online magazines.


TechTarget Corporate Web Site \| Media Kits \| Site Map All Rights Reserved, Copyright 2004 - 2009, TechTarget \| Read our Privacy Policy