what does this message mean?

[Kim]

I am trying to set up my email and when I try to log in I get this message
-- Account: 'plus.pop.mail.yahoo.com', Server: 'plus.pop.mail.yahoo.com',
Protocol: POP3, Server Response: '-ERR popgate unknown command', Port: 110,
Secure(SSL): No, Server Error: 0x800CCC90, Error Number: 0x800CCC18
Kimberli Martinez

 

[PA Bear [MS MVP]]

Are you a Yahoo Plus subcriber?

 

[Gary VanderMolen]

Go to Tools, Accounts, select that mail account, Properties, Servers.
Uncheck the box for "Log on using Secure Password Authentication."