B.01
Maintenance, an internet outage or a server fault no longer costs you emails. They arrive as soon as your server is back.
BackupMX
If your mail server goes down, a second mail server accepts your emails and holds them. Once your system is reachable again, it delivers them. Senders receive no error message and no email is lost.
01
Your Benefits
B.02
Senders see no error, so they neither send twice nor give up. You remain reachable to the outside world.
B.03
Once set up, it works automatically. There is nothing to switch over during an outage.
B.04
It costs less than a second mail server of your own and needs no maintenance from you.
02
Service scope
L.01
Set-up of the backup mail server for your mail domains and entry as a lower-priority MX in the Netsource DNS Service
L.02
Acceptance and temporary storage of all incoming emails while your mail server is unreachable
L.03
Automatic delivery to your server in the order received, as soon as it responds again
L.04
Protection against misuse, as the backup server only accepts emails for your registered domains
L.05
Check of the MX configuration and a delivery test during set-up
03
Requirements and exclusions
→ Prerequisites
- Your own mail server, on premises or hosted, which normally receives the emails
- Your mail domain is managed by Netsource (NDS-DOM-DE), or we are given access to its DNS for the MX entry.
- A valid recipient list or acceptance rule, so the backup server does not collect emails for unknown addresses
✗ Not included
- With Email Hosting (NDS-WP-MAILCOW) and Microsoft 365 (NDS-M365-BP), resilience is already part of the service. BackupMX is intended for self-operated mail servers.
- BackupMX only stores emails and does not filter them. Virus and spam protection in front of the mail server is provided by MailProxy (NDS-SEC-MAILPROXY).
- Mailboxes cannot be accessed during the outage. Emails become readable once your server is back.
- BackupMX does not replace the backup of the mail server itself (NDS-PVE-PBS, NDS-SEC-BCK-ACR-SRV).
04
Related Services
NDS-SEC-MAILPROXY
MailProxy
A virus and spam filter in front of your own mail server. Incoming emails are checked in Germany before they reach your system. It is intended for businesses that run their own mail server and do not want to expose it to the internet unfiltered.
NDS-WP-MAILCOW
Email Hosting
Email hosting with Mailcow in a German data centre, independent of Microsoft. You get a dedicated VM with your own IP addresses, IMAP, SMTP and ActiveSync, and built-in spam and virus filtering.
NDS-DOM-DE
Domain registration Germany
We register, manage and transfer domains under more than 1,000 extensions. In the Netsource DNS Service at dns.netsource.de you can also manage your domains yourself, around the clock. We have looked after more than 1,100 customer domains for years.
Does this fit your business?
In 30 minutes we work out whether this service suits you. Free and without obligation.