Email is one of those things that just works—until it doesn’t. And when your messages suddenly stop arriving or people say they never got your email, it gets frustrating fast. Most people don’t think twice about how email actually finds its way from one inbox to another. But behind the scenes, there’s something called an MX record quietly doing its job.
MX stands for “Mail Exchange,” and it tells the Internet where your domain’s email should go. If it’s not set up right, or if it gets changed by accident, emails might bounce, disappear, or never show up. It’s kind of like having the wrong address on your mailbox—even if the house is right, the mailman won’t know where to drop your letters.
To manage MX Records sounds super technical, but it’s not too bad once you get the hang of it. You just need to know where to look and what not to mess up. And yeah, it helps to understand the basics so you don’t panic if something stops working.
A few simple tweaks can fix a lot of common email problems — you just have to know what to check through this guide from ARZ Blog.
MX records might sound complicated, but they’re just instructions that help email know where to go. MX stands for Mail Exchange, and it’s part of something called DNS, which is like the Internet’s version of a contact list for websites and email systems.
Every domain (like yourwebsite.nl) has DNS settings, and one part of that is the MX record. That record tells the world which mail server should handle the email for that domain.
Let’s say someone sends you an email to info@yourdomain.com. Their email server checks your domain’s MX record to find out where to deliver it. It’s kind of like asking, “Hey, where should I drop this letter off?” And the MX record replies, “Send it to mail.yourprovider.com.” If that record is missing or wrong, emails will just float around and never land.
There’s also this thing called priority. If you’ve got more than one mail server set up, each MX record gets a number—lower numbers mean higher priority. So, the email will try to find the lowest number first. If that one doesn’t respond, it tries the next one. It’s like a backup plan in case something goes down, quite Handy.
Email is a big part of daily life, whether you run a business or just use it for personal stuff. If your messages stop arriving—or worse, people say they never got them—it can cause real problems. For businesses, it could mean missed orders or annoyed clients. For regular users, it might be job offers or school updates that never show up. Either way, email needs to work.
Things go wrong. Servers experience downtime. Internet hiccups happen. That’s why using more than one MX record is smart. You can set up a backup mail server that kicks in if the main one stops working. Most of the time, you won’t even notice it, but it’s there doing its job, keeping your emails flowing when it matters.
There are a few times when you’ll have to deal with MX records. Nothing dramatic, but worth knowing: – You’re setting up a new email service
Knowing how to check and adjust your MX records makes life a lot easier when something goes wrong—or before it does.
Before you start changing anything, it helps to know what you’re looking at. MX records aren’t super complicated once you break them down. They’re made up of a few parts, and each one has its job.
If even one part is off, emails can start acting weird or stop showing up altogether. So yeah, knowing what each piece does can save you much frustration later.
Here’s a quick breakdown of what you’ll usually see in an MX record:
This is just the domain or subdomain for which you’re setting the MX record. Most of the time, it’s just the main domain, like example.com. But depending on how your setup works, you might use a subdomain like mail.example.com.
This bit tells the system which mail server to try first. Lower numbers mean higher priority. So if you’ve got two records, one with priority 10 and one with 20, email will always try the 10 first. If that one’s down, it’ll move on to the next one. It’s the order in which servers are used.
This is the actual address of the mail server. It’s usually something like mail.provider.com. It tells the Internet where to send your email. If this part is wrong, the mail will go nowhere—simple as that.
It sounds a bit dramatic, but it just means how long other DNS servers should hold on to the information before checking again for updates. Shorter TTLs mean changes take effect quicker, but they also create more DNS traffic. Longer TTLs keep things more stable, but changes take longer to spread.
Related Article: 451 All MX Servers are Unavailable for Domain
Making changes to MX records might sound a bit technical, but once you know where to click and what to fill in, it’s honestly not that bad. Just take it one step at a time, and you’ll be fine. Below is a simple way to handle the most common MX record tasks.
Before you can work with MX records, you need to know where your DNS is managed. That’s not always super obvious, especially if someone else set things up for you ages ago. Sometimes, it’s with your domain registrar, sometimes your web hosting provider, or it might be a separate service like Cloudflare.
The place you log in depends on where your nameservers are pointing. If you’re not sure, you can check that using a WHOIS tool or by asking whoever set up your domain. Once you’ve found the right spot, you’re usually looking for something called DNS Settings, Zone Editor, or DNS Management Panel.
Alright, so you’ve figured out where your DNS is managed—a great start. Now it’s time to add an MX record. It doesn’t take long if you know what to fill in. Here’s how it usually goes:
Sometimes, you just need to update your MX record. Maybe you’re switching email providers or moving things to a new server. Whatever the reason, editing an existing record is usually pretty straightforward.
At some point, you might come across an old MX record that’s no longer being used. Maybe it’s from a previous email setup, or it was added during some test and then forgotten. If you’re cleaning things up, it’s fine to remove these, as long as you’re sure they’re not in use anymore.
Important: Deleting an MX record that’s still in use can break your email completely. No warning, no bounce message—just silence. So, if you’re not 100% sure what a record does, it’s better to ask or leave it alone until you’ve confirmed.
There’s no need to overcomplicate things, but a few smart habits can make a big difference when it comes to managing your MX records. Here’s what you should keep in mind if you want your email to stay reliable and hassle-free.
It’s always good to have a backup. Set a primary mail server with the lowest priority number and add a secondary one with a higher number. If the main one ever goes down, the backup keeps things running. It’s just a bit of insurance, and you’ll be glad you set it up.
TTL controls how fast changes to your records spread. If you’re making updates or testing something new, keep the TTL low (like 300 or 600 seconds) so changes go live quicker. Once everything’s stable, you can raise it to something like 3600 or more to avoid extra DNS traffic.
Check your MX records now and then. Make sure everything still points where it should. Use a test email tool once in a while to confirm that mail is arriving as it should.
MX records are just part of the picture. Also, make sure your SPF, DKIM, and DMARC records are set up correctly to help protect your domain from spoofing and spam issues. And it’s smart to check if your domain ended up on any blacklists—it happens more than you’d think.
If you manage a lot of domains or things change frequently, look into automating your record management. It will save you time and avoid silly mistakes.
Email is one of those things you barely think about—until it stops working. And when it does, it’s usually something small behind the scenes, like an MX record, causing the problem. The good news? Once you understand how MX records work and where to find them, fixing things isn’t as complicated as it seems.
MX records basically tell the internet where to send your email. If that info isn’t correct, your inbox stays empty. Whether you’re setting up a brand new email service, switching providers, or just cleaning up some old records, knowing how to add, edit, or remove MX entries can save you a ton of stress.
Keep in mind that mistakes here can cause mail to bounce or vanish. But if you take it step by step, double-check what you’re changing, and give DNS time to update, you’ll be fine. Also, don’t forget things like setting a proper TTL or keeping a backup mail server in place. It’s those small things that help keep everything running smoothly in the background.
Managing MX records might not be glamorous, but it’s part of keeping your digital stuff solid and dependable. And once you’ve done it a couple of times, it becomes second nature.
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If your domain does not have an MX record set, emails sent to you will not be delivered. Most of the time, they will bounce back to the sender. It’s like having no mailbox in your house—mail has nowhere to go.
Yes, and you should. Having a backup (or secondary) MX record is a good idea. If your main mail server goes down, the backup can step in and keep things working. Just make sure the priorities are set correctly.
It depends on the TTL (Time to Live) setting. If it’s set low (like 300 seconds), changes can take effect in a few minutes. But sometimes, it takes up to 24 hours for everything to fully update on the Internet.
You should, but only after the new one has been tested and is working. Leaving the old one active can confuse things or cause mail to go to the wrong place.
For regular use, 3600 seconds (1 hour) is pretty standard. If you’re making changes or troubleshooting, drop it down to 300 (5 minutes) for faster updates, then raise it back later.
Double-check everything—spelling, priorities, hostname, and value. Also, make sure your domain isn’t missing other important records like SPF or DMARC. Sometimes, it’s something small.
Nope. MX records work at the domain level. Once they’re set up correctly, any address under that domain (like info@, support@, etc.) will follow the same rules.
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