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MX Fallback

Fallback email server: no lost email during an outage

If your primary mail server or internet connection goes down, our Backup MX service takes over immediately. Your email is accepted and kept safe, so you do not lose critical messages.

Contact us How it works

Read all email

You get access to the last 5 days of spooled email, so you can keep working on your messages while you fix your mail server.

Spam control

Blacklists and greylisting block up to 95% of spam, so your inbox stays clean and organized.

Unlimited spooling

We do not limit the amount of email stored for your domain. All messages are kept for up to 5 days, which gives you time to solve server problems.

Why you need it

Back up your email

If your mail servers cannot be reached, there is a high chance that email bounces back to the sender. That can mean lost sales, lost revenue and, most importantly, missed communication.

No bounced email

An MX Fallback accepts the email your own server cannot receive, so nothing bounces back to the sender.

Delivered without loss

Messages are kept safe and delivered to your mailbox as soon as your server is available again.

Server or connection down

The fallback takes over whether your mail server itself or your internet connection has a problem.

Simple and reliable

Set up in your DNS in a few minutes

The MX Fallback works with MX records in your domain's DNS settings. No software to install on your own server.

1

Add an MX record

Enter the fallback email server address in the DNS of your domain.

2

Give it a lower priority

Make sure the fallback has a lower priority than the address of your current mail server, so it is only used when that server is unavailable.

3

Stay reachable

If the primary server is unavailable, your email is safely redirected to the backup server.

Who it is for

For businesses with their own mail server

An MX Fallback is useful when you run your own mail server, in your office or in a datacenter. vBoxx also includes it with its own email services.

  • Included with vBoxx mail serversEvery Kerio Connect mail server from vBoxx includes a fallback server, next to daily off-site backups, antivirus and spam filtering.
  • Included with hosted Kerio ConnectWith hosted Kerio Connect, a second email server takes over when the connection is interrupted or the server is updating.
  • Or stop running a mail servervBoxxConnect gives you email, calendars and tasks hosted in the Netherlands, with free migration.
MX Fallback FAQ

Frequently asked questions about the MX Fallback

What is an MX fallback server?

An MX fallback server is a second mail server in the DNS of your domain, with a lower priority than your own. When your primary mail server or its internet connection is unavailable, senders deliver to the vBoxx MX Fallback instead, so email does not bounce. The fallback keeps the messages and delivers them as soon as your server is reachable again.

How long does vBoxx keep my email while my server is down?

The vBoxx MX Fallback keeps incoming messages for up to 5 days, and there is no limit on the amount of email stored for your domain. That gives you time to fix your mail server. Once it accepts email again, the fallback delivers the queued messages to your mailbox without loss.

How do I set up the vBoxx MX Fallback?

Add an MX record with the vBoxx fallback server address in the DNS of your domain and give it a lower priority than your current mail server. Senders then only use the fallback when your own server cannot be reached. You install no software on your server, and the DNS change takes a few minutes.

Is the MX Fallback included with vBoxx email hosting?

Yes. A fallback server is included with every vBoxx Kerio Connect mail server, from a hosted account to a shared or private server, and with hosted Kerio Connect. If you run your own mail server elsewhere, contact vBoxx on +31 70 206 00 91 or at info@vboxx.eu to add the MX Fallback for your domain.

Want to stop losing email during outages?

Contact us to learn how you can benefit from an MX Fallback.
Contact us

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