Deployment Planning Guide > Application-Level Deployment Planning >
Siebel Email Response Deployment Planning
Processing inbound email messages makes more demands on server resources, particularly CPU usage levels, than processing outbound messages.
A single machine must handle processing of inbound messages associated with a single response group.
If inbound message volume warrants it and if multiple server machines are available to run CommInboundRcvr and related components, then you should consider running CommInboundRcvr on a separate machine (or machines) from other Communications Server components.
CommOutboundMgr and Siebel Smart Answer (Smart Answer Manager) may be run together on a different machine (or machines), as appropriate.
Combining processing of messages for multiple email accounts in a single response group can make processing of inbound messages more efficient. However, if message volume is expected to grow, then limiting the number of email accounts processed by each response group will give you more flexibility to distribute processing across multiple servers, avoiding processing bottlenecks.