I am unable to send mail even with the SMTP authentication enabled, I get a socket error

Your ISP may be blocking port 25 which would require you to use their outgoing mail server to send on. To test please do the following:

1) Open a command/DOS prompt while connected to the internet.

2) Type in the following command and press ENTER:

telnet mail.the-domain-name.com 25 **REPLACE: the-domain-name.com with your actual domain**

If the above command errors out then your ISP is blocking port 25 and you must use their server to send.

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