Using Your Own Email Relay Servers

Setting up your SmartSurvey account to use your own email server should be considered as a last resort. SmartSurvey makes a lot of changes and improvements to increase deliverability but we cannot control mail sent via your servers, which might get marked as SPAM.

If you would like to use your own relay mail servers, then you will need to first contact your account manager.

If you decide to proceed, you'll need to provide us with the following information to get this configured:

                Hostname/IP: smtp.example.com / 123.123.123.123

                Port: 25/465/587

                Username: as applicable

                Password: as applicable

                SSL: No/Smtps/START TLS

                Member ID: We will need the account number to apply this to, in most cases it is the master account.

Also, you should tell us if you want to allow all sub-users to use this configuration.

We relay email via a number of services so we recommend that you do not block any IP address but instead use authentication with a strong password to connect to your email server. However, most of these emails will be sent from the IP addresses below.

  • st1.smartsrv.co.uk / 185.234.36.244
  • st2.smartsrv.co.uk / 185.234.36.245
  • w1.smartsrv.co.uk / 185.234.36.224
  • w2.smartsrv.co.uk / 185.234.36.225
  • w3.smartsrv.co.uk / 185.234.36.226
  • w4.smartsrv.co.uk / 185.234.36.227
  • ms1.ssmx.net / 91.146.104.26
  • ms7.ssmx.net / 45.76.140.73
  • ms8.ssmx.net / 45.77.59.21
  • ms9.ssmx.net / 45.77.56.201

​You will need to add the sending domain to the account, but will not need to configure our SPF/DKIM since you'll be using your own servers, so our support team can verify your domain manually without this step.

Please note: After setup the email tool will appear to users exactly as before, with all the same functionality, apart from one exception. If you do use your own mail server, our systems will no longer know if an email sent has bounced, so all undelivered invites will be marked as "Pending" regardless if it failed to send or not.

Fault-finding: Any reason that causes your server to reject the message sending will register as a simple failure in the invitation with the message "Email invalid", which is the default for a rejected message. You should ensure that there is no rate limiting, otherwise you might see large batches of failed sends.


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