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VAPI Last modified: Wednesday, January 11, 2006

Virus Application Programming Interface, or Virus API (VAPI) is also referred to as Antivirus API (AVAPI), or Virus Scanning API (VSAPI). Virus Scanning API 1.0 was introduced in Microsoft Exchange Server 5.5 Service Pack 3 (SP3) and was standard until the release of Exchange 2000. Many improvements have been made to Virus Scanning API 1.0 to improve performance with Exchange Server. When you use a VAPI scanner and a client tries to open a message, a comparison is made to make sure that the message body and attachment have been scanned by the current virus signature file. If the current vendor or signature file has not scanned the content, the corresponding message component is submitted to the antivirus software vendor for scanning before that message component is released to the client. [Source: Microsoft help & Support] See also API.

eSecurity Planet  A resource for daily information on e-security targeted to IT managers. The site provides users with information from a variety of sources, including experts at security product and services firms, and the consultants who follow the security industry. Microsoft home page  The Microsoft home page hosts a collection of company news articles, as well as links to product information, training, support, free software, events, and company information. Microsoft Research Home page for the computer science research organization of Microsoft Corporation. Contains links to research areas, technical reports, news, researchers, and free demos of research projects and downloadable files of interest. Microsoft Help & Support - Exchange and Antivirus Software This article provides an overview of the different types of virus-scanning programs that are typically used with Exchange 2000 Server. The article lists advantages and disadvantages, and troubleshooting considerations for the different types of scanners.