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It's my personal blog and my post about what was my interested in. Not regularly. If you have any questions any discussion, I'm happy you get in touch with me, and try to answer as many as possible!

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Why Your Emails Land in Spam: SPF, DKIM and DMARC Explained

Why Your Emails Land in Spam: SPF, DKIM and DMARC Explained

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Your code sent the email. The receiving server just didn't believe it was from you. Here's what SPF, DKIM and DMARC each prove, the gotchas that break them, and how to set up Laravel mail properly.

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How DNS Works, and Why "It's Always DNS"

How DNS Works, and Why "It's Always DNS"

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The site works for you, not for your colleague, and works again tomorrow. That's DNS caching. Here's how a lookup really travels, why "propagation" is a myth, and how to debug it with dig.

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What Actually Happens When You Type a URL and Press Enter

What Actually Happens When You Type a URL and Press Enter

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Pressing Enter starts a relay race of DNS, TCP, TLS, HTTP, server work and rendering. Learn the whole route once and you'll know exactly where a slow page is hiding its delay.

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01. About Shiroz

Mohammed Shiroz

Hi, I'm Mohammed Shiroz, a software engineer and AI enthusiast from Sri Lanka who turns ideas into intelligent, real-world solutions. With over 9 years of hands-on experience, I currently lead real estate ERP development at Kate Group, a...

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