dovecot informational/error messages?

[Timothy Murphy <gayleard@xxxxxxxxxx>]

I'm getting the message

Nov 22 13:06:56 grover dovecot: imap-login: Disconnected (no auth attempts):
  rip=192.168.2.3, lip=192.168.2.5, TLS: Disconnected

every second on my CentOS-6.4 server.
Is this purely an informational message?
Or is it an error message?
And in either case, how can I stop the flood of messages?

-- 
Timothy Murphy  
e-mail: gayleard /at/ eircom.net
School of Mathematics, Trinity College, Dublin 2, Ireland


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