eXcacheD - database mirroring for ISP's

Database synchronization with eXcacheD:
The eXpurgate database server installed at the
customer's site is constantly updated by the
eXdb database from eleven.

In the so-called "eXdb" database, all information necessary for categorizing incoming e-mails is stored. The eXdb-Servers at eleven are queried for each incoming e-mail in order to assign a category to the e-mail.

For eleven E-Mail Security setups facing very large amounts of e-mail, like in the case of ISPs or major corporations, eleven offers eXcacheD, a Caching Proxy Server for remote queries to the eXdb database. Its mode of operation is similar to eleven In-House E-Mail Security, except that all relevant eXdb data are mirrored and constantly updated on the customer's local server:

eXcacheD stores the results of recent eXdb queries, thus effectively reducing outbound traffic, while at the same time improving response time - especially with large-scale MTAs. What's more, using the eXcacheD server enhances security in the case of failure.