Optimized Mailu docs

roles/web-app-mailu/docs/Spam_Issues.md

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+# Spam Issues 🚨
+
+## Inspect 🔎
+
+Use the following tools to monitor your domain and email deliverability:
+
+- [Google Postmaster](https://postmaster.google.com/) - Analyzes deliverability and spam issues for Gmail.
+- [Yahoo Postmaster](https://postmaster.yahooinc.com) - Provides insights and delivery reports for Yahoo.
+- [MXToolbox](https://mxtoolbox.com)
+
+## Blacklist Check 🚫
+
+If your domain is blacklisted, you can check the status with these services and take steps to remove your domain if necessary:
+
+- [Spamhaus](https://check.spamhaus.org/)
+- [Barracuda](https://www.barracudacentral.org/lookups)
+
+## Cloudmark Reset Request 🔄
+
+If your IP or domain is flagged by Cloudmark, you can submit a **reset request**:
+
+- [Cloudmark Reset](https://csi.cloudmark.com/en/reset/)