SMTP problem

[orbitahelps96]

I am having problems setting up webmail server does not connect this is the error log:

Warning: fsockopen () [function.fsockopen]: unable to connect to mail.upling.pcriot.com: 25 (Connection refused) in / home / Upling / public_html / include / smtp.php on line 129
Could not connect to smtp host: 111: Connection refused

and details of how to configure smtp:

smtp_host = 'mail.upling.pcriot.com';
smtp_username = 'uplingnotificaciones+upling.pcriot.com';
smtp_password = 'mypassword';