To Size Your MMP

When you size your MMP, the calculation is based on your system load, particularly the number of POP and IMAP concurrent connections for the MMP.

In addition, you must:

1. Add CPU or a hardware accelerator for SSL.

2. Add more disks for an SMTP proxy.

3. Account for denial of service.

4. Add capacity for load balancing and redundancy, if appropriate.

   As with inbound MTA routers, one or more of each type of machine should still handle peak load without a substantial impact to throughput or response time when you plan for redundancy in your deployment.