DA interface is timing out for a domain with 900 email accounts

[will-lo]

Dear all,

I have a domain with 900 email accounts, say it's abc.com.
I used abc.com admin account to login, click on POP3 Accounts icon.

http://x.x.x.x:2222/CMD_EMAIL_POP?domain=abc.com then it will timeout because of long email account list:

ERROR MESSAGE:

Your connection has timed out

Details:

Either your request was invalid or the program hasn't completed your request. Please notify the server admin.

I can only fix it by rebooting the server. It would work for 1-2 times then the problem starts over again. Is there a workaround for this?

Please help~ Thanks!