There are several ways to find the IP address of an SMTP server:
1. Use the ping command on the domain name of the SMTP server to retrieve its IP address. In the command prompt (Windows) or terminal (MacOS/Linux), type: ping name_of_server\_smtp.com. The IP address will be displayed as xxx.xxx.xxx.xxx.
1. Use a DNS resolver to retrieve the SMTP server’s IP address from its domain name. You can use sites like https://www.nslookup.io/ or https://mxtoolbox.com/DNSLookup.aspx for this.
1. Check the documentation for the SMTP service or server you are using to find its IP address. This information can be viewed in the configuration settings or on the provider’s website.
1. Contact the technical support of the SMTP service or server to obtain its IP address if you cannot find it otherwise.
