Usermin Failed to login to POP3 server

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#1 Sun, 07/01/2018 - 23:28
FirtIF

Usermin Failed to login to POP3 server

Usermin is giving an error, please help me!

An error occurred listing mail in this folder : Failed to login to POP3 server : Internal error occurred. Refer to server log for more information.

I have installed both webmin and virtualmin. I am new to linux, virtualmin and everything. I don't know how to view server log.