12.1 Mail Domains
12.1.1 Using Mail Domains to Filter Emails
Step 1. Apply to a local ISP for several domain names, "planet.com.tw",
"supportplanet.com.tw", "testplanet.com.tw" and "virtualplanet.com.tw" for
instance, to provide mail service. The mapped IP address is 172.19.100.164.
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