Postfix plays a variety of roles, all critical to the proper flow of email. It listens on the network for incoming mail, transports mail messages to other servers, and delivers local mail to a local program.

The LifeKeeper for Linux Postfix Recovery Kit provides a mechanism to recover Postfix from a failed primary server to a backup server in a LifeKeeper environment. Both LifeKeeper and Postfix ensure data integrity throughout the course of the failover process without significant lost time or human intervention.

Document Contents

This guide contain the following topics:

  • Requirements A description of the hardware and software necessary to properly setup, install, and operate the Postfix Recovery Kit. Refer to LifeKeeper for Linux Installation Guide for specific instructions on how to install or remove LifeKeeper for Linux software.Postfix Recovery Kit.
  • Troubleshooting. A list of LifeKeeper for Linux error messages including a description for each.

Documentation and References

The following LifeKeeper product documentation is available from SIOS Technology Corp.:

This documentation, along with documentation associated with optional LifeKeeper Recovery Kits, is available on the SIOS Technology Corp. website at:

Postfix Documentation and References

The following is a list of reference documents associated with the Postfix application and the LifeKeeper Postfix Recovery Kit:

  • Postfix Man Page
  • Red Hat Postfix Reference Manual


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