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Maximilian Wilhelm

@BarbarossaTM@noc.social View on noc.social

Holistic Network Software & Automation Evangelist, building solutions that last | Leader | Author | Public Speaker | Open Sourcerer | Network Sommelier | Zugnerd | 🎹, 🛠, 🚂 🚅
Lebt, liebt und arbeitet irgendwo zwischen PB, SB und MUC. #TabShip 💜 #NoAI #DontTrustAI #AIDidntRead #Trains
blog.sdn.clinic, myfirst.network, ffho.net

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Maximilian Wilhelm @BarbarossaTM@noc.social

Updated my mail server a week ago, had some troubles and installed firewall DROP rule for 25/tcp for IPv4 and IPv6. Once everything was fine again, I believed I removed both rules.

I got mails, and everything looked great!

Today, I was informed, that my MX did not accept mails from an AWS relay, and turns out, I only enabled IPv6 again, and forgot about IPv4. 😅

MX goes brrr...

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