Receive alert emails from Site24x7 on time

How to make sure you receive all the alert emails on time from Site24x7?

Site24x7 offers deep insight into the availability and performance of your IT infrastructure; further triggering timely alerts during any performance issues. However, you may have trouble receiving these alert emails in your inbox, if you haven't set up a proper white list rule in your organization mail server. Proper white listing facilitates better reception of alert emails from Site24x7 to your inbox and prevents emails from being sent to your spam folder instead.
To seamlessly receive alert emails in your inbox, please follow the guidelines listed below:

1, US data center
You may have to white list our email sending domain "mail.site24x7.com" and the following mail sending IPs in your firewall rules:
  • 204.141.42.0/23
  • 136.143.190.0/23
  • 136.143.187.0/24
  • 65.154.166.0/24
  • 8.45.169.0/24
  • 216.52.72.0/23
  • 204.141.32.0/23
  • 136.143.186.0/24
  • 136.143.189.0/24
  • 204.141.160.0/24
  • 136.143.182.0/23
  • 135.84.80.0/22
Once this is done, you must also add the email address "noreply@site24x7.com" to your mail client’s “Address book” or “Safe senders list”. Just open an alert email from Site24x7 and verify its trustworthiness.

2. EU data center

You may have to white list our email sending domain "mail.site24x7.eu" and the following mail sending IPs in your firewall rules:

  • 185.20.209.0/24
  • 31.186.243.0/24
  • 185.20.211.0/24
  • 31.186.226.0/24
  • 87.252.213.0/24
  • 89.36.170.0/24
  • 185.172.199.0/24
Once this is done, you must also add the email address " noreply@site24x7.eu" to your mail client’s“Address book” or “Safe senders list”. Just open an alert email from Site24x7 and verify its trustworthiness.

3. CN data center

You may have to white list our email sending domain "mail.site24x7.cn" and the following mail sending IPs in your firewall rules:

  • 163.53.93.0/24
  • 163.53.94.0/27
  • 118.126.63.128/25
  • 118.126.63.64/26
  • 124.251.121.0/24
  • 124.251.122.0/25
  • 124.251.128.0/24
Once this is done, you must also add the email address "noreply@site24x7.cn" to your mail client’s “Address book” or “Safe senders list”. Just open an alert email from Site24x7 and verify its trustworthiness.

4. IN data center

You may have to white list our email sending domain "mail.site24x7.in" and the following mail sending IPs in your firewall rules:

  • 103.89.75.0/24  
  • 103.103.199.0/24
  • 103.122.78.0/24
  • 125.17.151.80/28
  • 125.17.212.96/28
  • 103.89.74.0/24      
  • 103.103.196.0/23   
  • 103.103.198.0/24   
  • 103.117.158.0/24  
  • 103.117.159.0/24  
  • 199.34.22.32/28
  • 125.18.30.112/28
  • 125.16.138.240/28
  • 154.83.3.32/28
Once this is done, you must also add the email address "noreply@site24x7.in" to your mail client’s “Address book” or “Safe senders list”. Just open an alert email from Site24x7 and verify its trustworthiness.

5. AU data center

You may have to white list our email sending domain "mail.site24x7.net.au" and the following mail sending IPs in your firewall rules:
  • 101.97.36.0/24
  • 103.138.128.0/23
  • 103.91.166.0/24
Once this is done, you must also add the email address " noreply@site24x7.net.au" to your mail client’s “Address book” or “Safe senders list”. Just open an alert email from Site24x7 and verify its trustworthiness.

Note: There is a limit of 500 alerts per day for an email address.

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