Any e-mail address can be used as a system e-mail address. However, system e-mails such as e-mail notifications and the secure access e-mails may be blocked depending on your incoming mail server security settings.
To prevent any issues, we recommend the following:
- Specify the e-mail address that exists on your mail server as the system e-mail address. Using the existing e-mail address can prevent e-mail notifications from being blocked. If not, create a new e-mail address on your mail server, and then specify it as the system e-mail 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?