retrieving mail from gmail

[Ian Pomanitskiy]

hi! I have configured James 2.3.2 on the server with public ip and i can
send and retrieve emails via JavaMail on localhost. But if I try to
configure Gmail account for retrieving mails from james i can't connect to
pop3.
Are this settings of James or DNS server?

The settings for pop3 of James are:
  <pop3server enabled="true">
      <port>110</port>
      <handler>
         <helloName autodetect="true">xxx.xxx.xxx.xxx (server
ip)</helloName>
         <connectiontimeout>120000</connectiontimeout>
      </handler>
   </pop3server>