Secure queue
Messages wait for up to 14 days, up to 50 MiB each.
Backup MX
Backup MX: no lost mail when your server is down
SecuraWall works as your secondary MX. While your mail server cannot be reached, mail is accepted, kept in a secure queue and delivered as soon as your server answers again.
Monthly per domain · No long contracts · No automatic charges
Message detailsQueue ID 4JPV7KRetrying (temporary delivery failure)
The receiving server has not accepted it yet: mx.acme.example does not answer.
The receiving server has not accepted it yet: mx.acme.example does not answer.
- 09:12Accepted by SecuraWall; your server does not answer
- 09:15Retry 1 · connection timed out
- 11:37Retry 48 · connection timed out
- 11:40Delivered · 250 2.0.0 OK
- days of queue lifetime
- 14
- minutes between retries
- 3
- MiB per message
- 50
How it works
Your own MX stays first. SecuraWall waits behind it.
You keep your current MX record and add SecuraWall as a secondary MX with a lower priority. Senders try your server first. When it does not answer, they deliver to SecuraWall instead of failing.
SecuraWall retries delivery to your server every 3 minutes. When your server answers, the queued messages are delivered in order.
01Sender
02SecuraWall · multi-layer protection
03Your mail server
What you get
Continuity you can see.
Delivery history and queue view
See which messages are waiting and when they were delivered.
Outage alerts
Your technical contacts are told when your mail server stops answering.
Upgrade at any time
Move the domain to Email Security to add filtering and quarantine; continuity stays included.
Questions about Backup MX
Does Backup MX filter spam?
No. Backup MX is for continuity: it accepts, queues and delivers. Filtering, quarantine and link protection are part of Email Security.
What is the difference between queue lifetime and quarantine?
The queue holds mail your server could not receive yet. Quarantine holds mail that a security layer decided not to deliver.
How much does it cost?
USD 15 per domain per month, taxes included.