On Feb 14, 2008, at 7:12 PM, Charlie Brady wrote:

qmail could/should detect this by recognizing that 0.0.0.0 is a loopback address, and that the recipient domain isn't listed in rcpthosts. But there's a bug. And a patch:

http://www.suspectclass.com/~sgifford/qmail/qmail-0.0.0.0.patch

I don't know what postfix does, but I expect it's sane.

qpsmtpd could/should refuse any message where MX of the sender or recipient domain is 0.0.0.0.

Where should we put this logic? Which standard plugin that's commonly used would it best fit into? (Goofy to make a plugin just for this, I think ...)


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