The default is
2,000 and can be increased up to 25,000. The default for the maximum number of connections from a
single IP, MaxConnectionFromSingleIP , defaults to 20. On networks using NAT, this setting can be too
low. The value can be increased to a maximum of 1,000. Finally, it is possible to set the maximum
number of connections per user. The default is 10 connections, and can be increased to 1,000. It is not
recommended to increase the connections per user, unless there is a specific requirement to do so.
This example sets the maximum number of connections to 5,000, and the maximum number of connections
from a single IP to 1,000:
Set-ImapSettings -Server CA100 -MaxConnections 5000
-MaxConnectionFromSingleIP 1000
Part II: Working with Server Roles
170
Figure 6-4
Certificates
Perhaps one of the most challenging aspects of configuring the Client Access Server is configuring
security. All external communication to a CAS server should be secured using Secure Sockets Layer (SSL)
because information like passwords is sent in clear text across un - trusted networks. SSL requires a digital
certificate, which acts like a driver ??™ s license. To get a driver ??™ s license, one must prove that they are who
they are to a government issuer, typically with something like a birth certificate.
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