Managing mail traffic with an IMAP proxy

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IMAP proxies like Perdition, Imapproxy, and Cyrus Aggregator help distribute mail to multiple IMAP servers. We examine some options for IMAP proxy in the Linux evironment.

More and more IMAP servers are groaning under the load of increasing mail traffic. This presents administrators with a problem: clustering an IMAP server is not a trivial
task. To make sure a shared database is available for user mailboxes, administrators often resort to expensive SANs for
shared storage or complex replication mechanisms.
The cost of commercial clustering systems such as Red Hat’s cluster suite RHCS make some IT bosses nervous, and the prospect of migrating an old IMAP server to a new cluster system and the technical complexities involved bring many a system administrator to a nervous sweat.

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