If you are using an email client on a device that roams between different networks (Home / work / WiFi Hotspots etc) you may find you cannot send email.
This may be due to other internet service providers blocking outgoing mail ports. Traditionally this is used to stop spam email from being sent across unsecured networks.
SMTP-AUTH is a way you can always authenticate to our server even if you are not on the NOW network.
Feel free to get in touch and we can assist with enabling SMTP-AUTH.