Check there are no known problems or planned outages - these are detailed on our Service Status page.
If you are getting 'authentication' errors - re-check your username and password are correct - remember both usernames and passwords are case sensitive.
You can verify your username / password by logging into your Control Panel.
Important: In the setup instructions we use the example username of 'authsmtp.username' - if your username was 'ab12345' please enter it exactly as that and not as 'authsmtp.ab12345'.
Check if any errors are being logged by logging into your Control Panel then select the link for 'Message History'.
If you get 'relaying denied' or errors saying the email address is not authorized check you have added (and authorized) the email address by logging into the Control Panel then choose the option to 'View / add email from addresses'.
If you get 'time out' or 'could not connect to server' errors - your Internet 'access' provider may be blocking the default 'port 25' used for outgoing mail - we recommend using SMTP port 23, 26 or 2525 when sending through our servers.
You can test you connection using our SMTP diagnostics program (Windows only) and to change the SMTP port number you are using see How To Setup AuthSMTP or check the help file for your email program for details.
Check our extensive Frequently Asked Questions section - your problem may have already been answered.
If none of these have solved your problem contact us using the online Support Form - ensure you provide as much information as possible (including your account number, email address you were sending email 'from' and any error messages or codes).
If you have any questions please contact us.