- Version 7.0.1, 7.0.1IR, or higher
- 7.0.3 or later is recommended for bug fixes and performance improvements
- SOAP port must be enabled on all POAs to be scanned for messages
- SSL can be used, but costs significantly in performance
- SLES 10 64 bit
- Windows 2003 64 bit
- NetWare 6, 6.5
- Windows XP, Vista 32
- Windows 2003 32
- Windows 2003 64
- SLES 9 32
- SLES 10 32
- Netware 6.5.6+
- XML
- MySQL
- MS SQL 2000 and 2005
- Oracle 9, 10
- PostgreSQL 8.2
- Other database integration through the JDBC connector
- Pentium 4 (or higher) at least 1.0GHz
- 1 GB of RAM (for the Server) 64 MB of RAM (for the Worker)
- Apache 2.0x (2.2 for SLES 10.1 and OES 2)
- MySQL 5.0x (or alternate supported database version)
- Sun Java 1.5 JDK 32-bit or 64-bit versions
- As much storage space as the mail system requires
- 3 GHz or better processor (dual-core recommended)
- 2 GB system RAM or more installed
- 1.5 GB RAM free for Retain Server
- 160 MB RAM free for Retain Worker
