Slow POP3

[pbruna]

Im testing Zimbra for 10K users.
All of them check their email using POP3 every 1 minute.

The pop3 services is delivering the messages really slow. Postfix is Fine.
For example a 4MB attachment is sent in less than 1 second trough postfix, but retrieving it with pop take like 5 minutes.

The server is a HP DL360 with 16GB RAM and Two Dual Core Xeon. The storage its a Hitache with FC. Using Multipath with Round Robin.

Using netstat i see a lot of TIME_WAIT connections, like 1000, and only arround 200 ESTABLISHED POP3.

Im running with 600 POP3 Threads.

Any ideas where to check or i need a bigger machine?

Thanks

[pbruna]

Also, the problem is appreciable only when a email has an attachment of >=100K.
With only text files everything looks good.

[RolandoG]

Nadie te respondio a esta consulta?
Yo tengo el mismo problema.