K12 schools in the US have a lot of weird filtering rules, and not all of them are spam related. 

Laura

Sent from my iPhone

On Mar 13, 2026, at 6:47 AM, Paul Smith via mailop <[email protected]> wrote:


I haven't seen it only allowing a single country, as people from your country could be using servers elsewhere, but I have seen people block specific countries, eg Russia and Belarus 

Paul 

On 12 March 2026 22:39:15 "Scott Q. via mailop" <[email protected]> wrote:

Anyone else stumbled upon this practice ? Seems kind of silly since spammers can easily hijack a server in the desired geography and still get through...so what would be the point ?

This is from a US School District

"Hello,
Your email was automatically dropped without being read.

This is due to your email originating from Non-US Email Servers."

Scott

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