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<meta property="og:description" content="A failure story Last week, I received an email from Let’s Encrypt reminding me to renew my certificates. I forgot to renew it and the certificate expired. Now I can’t send or receive any emails. If you send me email in the last week and wonder why I didn’t respond, this is the reason.">
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<h3 class="author__name" itemprop="name">Şahin Akkaya</h3>
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<p>A perfectionist who likes to tinker everything until it is just right.</p>
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<meta itemprop="headline" content="Confession Time">
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<meta itemprop="description" content="A failure storyLast week, I received an email from Let’s Encrypt reminding me to renew my certificates. I forgot to renew it and the certificate expired. Now I can’t send or receive any emails. If you send me email in the last week and wonder why I didn’t respond, this is the reason.">
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<header>
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<h1 id="page-title" class="page__title" itemprop="headline">Confession Time
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</h1>
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<time datetime="2022-04-08T15:46:00+00:00">April 8, 2022</time>
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2 minute read
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<h2 id="a-failure-story">A failure story</h2>
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<p>Last week, I received an email from <a href="https://letsencrypt.org/">Let’s Encrypt</a> reminding me to renew my certificates. I forgot to renew it and the certificate expired. Now I can’t send or receive any emails. If you send me email in the last week and wonder why I didn’t respond, this is the reason.</p>
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<p>Anyway, I thought it will be easy to fix. Just run <code class="language-plaintext highlighter-rouge">certbot</code> again and let him do the job, right? NOPE. It is not that easy. It is just giving me errors with some success messages. If I was not so clueless about what the heck I am doing, I could fix the error. But I don’t know anything about how SSL works and it is a shame.</p>
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<p>I don’t even know the subject enough to Google it. I feel like I am the only guy in the planet whose certificate is expired. Seriously, how tf I can’t find a solution to a such common problem? There was a saying like, <em>“If you can’t find something on the internet, there is a high chance that you are being stupid”</em>. It was not exactly like this but I can’t find the original quote either. Argghh…</p>
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<p>If you know the original quote, email me… No, do not email because it does not work. F%ck this thing. F*%k everything. I deserved this. Do not help. If I can’t fix this by myself, I should not call myself computer engineer. I am out.</p>
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<h3 id="update"><strong>Update</strong></h3>
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<p>The problem is fixed. One of my colleagues told me to reboot the server so that it will (<em>possibly</em>) trigger a script to get a new certificate. I did not think it would work because I already try to get a new certificate manually running <code class="language-plaintext highlighter-rouge">certbot renew</code>. And yeah, it didn’t change anything but gave me courage to try other <em>dead simple</em> solutions.</p>
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<ul>
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<li>
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<p>One of them was adding missing MX records for my domain. <code class="language-plaintext highlighter-rouge">certbot</code> was telling me that it can’t find any <code class="language-plaintext highlighter-rouge">A</code> or <code class="language-plaintext highlighter-rouge">AAAA</code> records for <code class="language-plaintext highlighter-rouge">www.mail</code>. I didn’t think this is related with my problem because how would I receive emails before then? Anyway, I added the records and the errors are gone. It was only giving me success messages now. Everything seemed to be fine. But I still could not connect to my mail account.</p>
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</li>
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<li>
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<p>And here is the solution: <code class="language-plaintext highlighter-rouge">sudo systemctl restart dovecot</code>. Kill me. I am <em>guessing</em> I had to restart the mail service because certificate has changed and it had to pick up the new one. I bet if I had run this command right after <code class="language-plaintext highlighter-rouge">certbot renew</code> I would not face any issues. The error messages caused by missing mx records were not related with this problem but I was confused by them and I thought something wrong with my certificates.</p>
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</li>
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</ul>
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<p>Any way, I am happy that it is finally fixed. Did I learn something from this? Not much. But yeah, sometimes all you need is a simple restart :D</p>
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<p class="page__date"><strong><i class="fas fa-fw fa-calendar-alt" aria-hidden="true"></i> Updated:</strong> <time datetime="2022-04-13">April 13, 2022</time></p>
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4 minute read
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<p class="archive__item-excerpt" itemprop="description">Anytime I install a new system on my machine, I pray God for nothing bad happens. But it usually happens. When I reboot, I find myself in the “Grub rescue” m...</p>
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<a href="/2022/02/27/creating-a-useless-user.html" rel="permalink">Creating a <em>Useless</em> User
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1 minute read
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<p class="archive__item-excerpt" itemprop="description">Story
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In my previous post, I explained how to do port forwarding to access some machine behind private network. I will use this method to fix some issues in ...</p>
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