exchange spam blocker

Exchange Spam Blocker

Microsoft's trade name for its proprietary e-mail management system is EXCHANGE, popular among large corporations or institutions that use Microsoft softwares.
Exchange is the system for your company's e-mail and not the program you use to pick up your mail.
Exchange is supported primarily by Microsoft's Outlook mail client, and by an increasing number of non-Microsoft clients as well.
Exchange generally does not use open standard protocols (SMTP, POP, etc.
Graylisting is a technique used by a mail exchanger host to defend against spam deliveries by temporarily rejecting all mail from unrecognized sources.
It can also find the mail exchangers used to send mail to addreses within a domain.
Microsoft Exchange - Part of the Windows Server line of products Exchange is a collaborative software product which handles email, calendars and daily tasks amongst other things.
A mail exchanger (MX) is the technical name for a mail host, the mail transfer agent officially designated within DNS to receive mail on behalf of users of a given domain.
Spam recipients who use Exchange-based mail services are at a relative disadvantage in tracing spam messages, since Exchange clients often make it difficult to see SMTP headers.
Domain name service (DNS) is a distributed database, accessible everywhere on the public internet, that can convert or resolve host name references to IP addresses (or vice-versa), identify mail exchanger hosts for a domain, and provide other useful features.