IMAP/POP3 Maximum Connections/ Maximum Connections Per Ip?

[WebHostDog]

Hello,
Anybody have expirience what are the acceptable values for a server with 150 200 cleints for this ?


Maximum Imap Connections (Total)
Maximum Imap Connections Per Ip
Maximum TLS/SSL Imap Connections Per Ip
Maximum Pop3 Connections (Total)
Maximum Pop3 Connections Per Ip
Maximum TLS/SSL Pop3 Connections Per Ip
Number of Authentication Daemons


And what happens if the hit the limit (if low) ?

Thanks,