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Multiple mail servers help to balance the load on individual servers, making sending and archiving messages easier and faster. These mail servers are all listed in the network’s DNS registry as mail exchange (MX) servers, with the primary mail server being the first one listed. Mail is sent to the primary server, then to subsequent servers if the server is down or the load is heavy.
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Frequently, anti-virus software or an exchange server spam filter is installed on the primary MX server. A common trick of spammers is to send messages to one of the other MX servers, bypassing any corporate spam filter reviews on the primary mail servers. Running a exchange server spam filter on each mail server, however, can become expensive because of licensing fees and increased maintenance time.
LivePrism controls messages which are delivered and filtered by mail servers by functioning as a single, controlled set of corporate spam filter reviews which routes messages.
LivePrism is a hosted system; it replaces all of the other mail servers in the MX record. LivePrism uses a single exchange identity, MXPath, in your network’s DNS record. Then, MXPath is configured to route information to the mail servers. Routing the message traffic through an exchange server spam filter accomplishes three things:
- Spam and virus filter updates are applied automatically, without gaps in protection.
- Spam and viruses are never delivered to your network.
- Business networks can still use and maintain their own independent mail servers.
Inbound traffic is run through a series of spam filters. LivePrism archives all inbound messages and quarantines questionable messages. Quarantined messages can be reviewed and used as a basis for blacklists and content rules, so corporate spam filter reviews of every message can be customized. LivePrism can even filter outbound messages against the content rules.
Because of the way LivePrism routes messages, the physical network setup doesn’t matter. Whether the mail servers are onsite, spread across multiple locations, or in a colocation facility, LivePrism’s MXPath can still be configured as the sole MX server and route messages to the appropriate mail servers. If the mail server is hosted by a service provider of some kind, but you own the domain, that mail traffic can be still be routed through a LivePrism exchange server spam filter system or, ideally, switched to LivePrism hosting services, without losing the domain name. |
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