Add Email Authentication Checker tool to MDO repository#2484

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iserrano76 wants to merge 3 commits intomicrosoft:mainfrom

iserrano76:MDO-EmailAuthChecker

Commits on Dec 4, 2025

initial commit for a new tool from MDO
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Merge branch 'MDO-EmailAuthChecker' of https://github.com/iserrano76/CSS-Exchange into MDO-EmailAuthChecker
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Commits on Jan 2, 2026

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