On Wednesday, March 12, 2003, at 11:44 AM, Gil Poulsen wrote:
<snip>
I do find it strange, though, that SIMS would verify return paths for local
users. How could they possibly resolve correctly if local users have
non-routable, DHCP-assigned IPs like 192.168.0.6 or 10.0.1.6? Or am I not
understanding what this function is actually doing?
SIMS verifies that the return address that the sender gives ([EMAIL PROTECTED]) actually resolves to a place that mail could be sent to. That is it checks that xyz.com has a DNS MX or A record associated with it. This is a separate check from whether the IP address is is local, a "client" host, blacklisted, etc.
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