An extra filling for anti-spam layer cake
Mirapoint has added an extra layer of spam protection to its email servers. Licenced from Commtouch and called Rapid Anti-Spam, it looks for patterns in the origin and volume of incoming email, aiming to detect whether the source is a known server or a 'Trojaned' PC that has recently sprung into life, for example.

The mailserver generates a signature from each incoming message and queries that against a central database collected by Commtouch. "It's similar to virus blocking - you're looking for patterns of outbreak," says Mirapoint senior technical consultant Jamie Cowper. He says the idea is layers of defence that progressively filter more and more spam, each layer more refined than the last, beginning with basic SMTP checks, then Rapid Anti-Spam, and so on.

Fault analysis on any segment, anywhere
Convergence can make it harder to troubleshoot a network because of the number of topologies involved, but software specialist WildPackets reckons it has a solution. It claims that version 2 of its Omni3 network fault analysis tool can diagnose problems anywhere on the network from a single console, whether the faulty segment is wired or wireless, and LAN or WAN.

Omni3 v2 also includes visualisation tools and expert analysis, and can be used for 24x7 network monitoring, the company says. As well as selling Omni3 as software, WildPackets offers a hardware box called Omnipliance, which has it and other software pre-loaded and pre-configured.

Higher compression could mean more replication
NSI has updated its Double-Take data replication software for Windows to include a features such as intelligent data compression and email notification. The company says that it has improved the software's system resource management abilities too.

The improved compression capabilies in Double-Take v4.4 will make disaster recovery practical for sites that couldn't previously afford the WAN bandwidth it needed, says Ian Masters, sales director at NSI's UK distributor Sunbelt System Software. He adds that the software, which costs from £1,000, offers multiple compression levels and can intelligently assess data to be replicated to determine whether the benefit from compression outweighs the potential system overhead.