I cannot send email via SMTP, but receiving email is ok.
The reason you may not be able to send email is because of something called SMTP AUTH. SMTP AUTH checks to see that you are authorized to send email before allowing you to relay messages through the server.
The reason we utilize this system is because if the server did not check before allowing you to send email, then anybody on the Internet could send email through the server, thus leaving it open to bulk mailers (Spammers). The simple solution to this is to use the SMTP servers that your ISP provides you with. Not only will this solve the authentication problem but your emails do not have to travel across the Internet before being sent, thus they will send much faster. Since you are directly connected to your ISP's internal network, they do not need to authorize you before sending. Also, the recipient of your email will not even notice that you are sending through your local SMTP server, as opposed to the SMTP server located on our servers. Your email address will appear exactly the same.
If for some reason, you are not able to use the SMTP servers provided by your ISP, feel free to use ours. However, please be sure that you check your email within 30 minutes of attempting to send. When you check email, you are added to a list of 'authorized' IP addresses for the next 30 minutes--and are therefore allowed to relay messages through our SMTP servers.
NOTE: Some ISP's force you to use their SMTP servers to send mail by blocking your ability to make connections to external SMTP servers. Please check with your provider to see if they employ "port 25 blocking".
If your ISP do block port 25 then please change the port to 26, as we now operate an outgoing mail server on this port also.
