It is possible to have emails be sent to the SMTP Receiver service running on your SureView Device tier for them to be decoded as alarms by integrations such as the Generic SMTP integration.
Each device added in the SureView software is assigned a unique identifier which is the email address that emails must be sent to in the format "Sfirstname.lastname@example.org"
There are 3 possible ways of sending emails into the SureView SMTP Receiver service on your SureView Device servers depending on your network layout:
- Via company email server: Have your IT team set up an SMTP forward in your company email server (Exchange etc) to cause the specific incoming emails to be forwarded to port 25 TCP on your SureView Device servers - contact your IT team to see if this is possible and have them set it up.
- Directly to the servers on the same network: Send the emails directly to your SureView Device servers from an internal system by setting it to send its emails to port 25 TCP on the load balanced IP of your SureView Device servers - refer to the manufacturer documentation for your system on how to configure its SMTP server settings
- Directly to the servers over the internet: Send the emails directly to your SureView Device servers from a system on the internet by doing the following:
- Ensure your Router has a static public IP (your router's IP cannot change)
- Forward port 25 TCP from your Router to the load balanced IP of your SureView Device servers.
- Buy a domain and set the DNS records so that email sent to it goes to your Router.
- Purchase a domain such as "mysureview.com" (note you cannot use a domain that is already in use for corporate email as it can only go to one place - you cannot send incoming email to your corporate email server AND the SureView Device servers)
- Add an "A" DNS record which points to the public IP of your router i.e. "devices.mysureview.com" -> 18.104.22.168 (your router IP)
- Add an "MX" DNS record which points to the A record you made above
- At this point, email sent to "email@example.com" will be sent to your Router then forwarded on to your SureView Device servers for decoding by an integration such as the Generic SMTP integration.
The SureView SMTP Receiver service has a number of security features to keep it secure which you can further increase by setting additional measures in your network:
- No sending: The service does not have any capabilities for sending emails so it cannot be used as an SMTP relay to send spam etc.
- Source IP filter: By default the service only accepts connections from IP addresses that exist as devices inside the software.
- You can further secure this by setting source IP filtering at the network level in your Routers and Switches
- To Address filter: By default the service ignores emails with a To address that do not exist as a device inside the software.