IPv4 IP address space is just about used up, as the unused pool of IP addresses waited to be doled out is no more . And practically speaking, almost all email sending lives in IPv4 space. (That&…
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Every email server has an IP address. It's sort of like the phone number for a server. It's often a stable identifier. Each IP address traces back to a company who owns a…
Return Path's Tom Sather explains when it's OK to use a shared IP address . Basically, when your volume is very low. He suggests that the cutoff be 50,000 messages a mont…
