Any email address can be used as a system email address. However, system emails such as email notifications and the secure access emails may be blocked depending on your incoming mail server security settings.
To prevent any issues, we recommend the following
- Specify the email address that exists on your mail server as the system email address. Using the existing email address can prevent email notifications from being blocked. If not, create a new email address on your mail server, and then specify it as the system email address.
We also recommend the following when an IP address filter is used to restrict access to your mail server
- Add all the IP addresses used by Kintone to your whitelist. For the list of IP addresses that Kintone uses, see What IP addresses does Kintone use?