php - Connection Refused in mail - Magento -

php - Connection Refused in mail - Magento -

i'm using smtp pro self extension. it's working fine in local server, when i'm hosting in website, i'm getting below error:

smtp pro self test results sending test email contact form address: vin@yahoo.com from: vin@gmail.com unable send test email. exception message was: connection refused please check user guide frequent error messages , solutions. default templates exist. email communications enabled.

please help me resolve this.

php email magento