DynHost

Acceptable use policy

Effective date: 2026-06-14

This AUP is incorporated into the Terms of Service.

1. Scope

This Acceptable Use Policy applies to all use of the Services by you and any user you allow to access the Services.

2. Prohibited content

You must not store, transmit, display, or otherwise make available through the Services any content that:

  • Is illegal under UK law (or the law of any jurisdiction in which the content is accessible)
  • Is harmful to children, including child sexual abuse material (CSAM)
  • Is obscene, pornographic, or sexually explicit (except where lawful and access-controlled)
  • Incites violence, terrorism, or hatred against any person or group
  • Is defamatory of any person
  • Infringes the privacy of any person
  • Is misleading, fraudulent, or deceptive, including phishing pages and pyramid schemes
  • Infringes intellectual property rights
  • Constitutes spam or unsolicited bulk communications
  • Contains or distributes malware, viruses, ransomware, spyware, or other malicious code

3. Prohibited activities

You must not use the Services to:

  • Attempt to gain unauthorised access to any system, network, or account
  • Conduct port scanning, vulnerability scanning, or penetration testing without our prior written consent
  • Engage in denial-of-service attacks
  • Send unsolicited communications (spam)
  • Mine cryptocurrency on shared or reseller hosting
  • Host open proxies, mail relays, or Tor exit nodes on shared infrastructure
  • Resell the Services unless you have an active Reseller or VPS product
  • Bypass our resource limits

4. Email policy

  • You may not send unsolicited bulk email (UBE) or unsolicited commercial email (UCE).
  • You may not use deceptive headers, misleading subject lines, or invalid sender addresses.
  • Outbound SMTP (port 25) is blocked by default on shared and reseller hosting.
  • Marketing email must comply with PECR, including a working unsubscribe mechanism.

5. Resource limits (fair use)

Shared and reseller hosting accounts are subject to the following fair-use limits:

  • CPU usage: must not exceed 25% of a core for more than 90 seconds at a time
  • Memory (RSS) per process: 512 MB
  • Concurrent processes: 50 per user
  • Inodes: 250,000 per account
  • Outbound email: 500 messages per hour per account
  • Database size: 5 GB per database
  • Storage I/O: throttled above 5,000 IOPS for sustained periods

6. Security

You are responsible for keeping all software up to date, using strong unique passwords, enabling 2FA, maintaining your own backups, scanning for malware, and reporting security incidents to security@dynhost.co.uk.

7. Backups

We perform nightly backups retained for 30 days, primarily for our own disaster-recovery purposes. These backups are not a substitute for your own backups.

8. Reporting violations

If you become aware of any violation of this AUP, please report it to abuse@dynhost.co.uk.

9. Enforcement

We may take any of the following actions: warning, throttling or rate-limiting, suspension, termination, removal of offending content, and disclosure to law enforcement.

10. Zero-tolerance provisions

The following are zero-tolerance violations, for which we will suspend or terminate immediately without prior notice:

  • Hosting or distribution of child sexual abuse material (CSAM)
  • Conducting or facilitating denial-of-service attacks
  • Distribution of malware, ransomware, or phishing kits
  • Phishing or other credential-harvesting activity

11. Appeals

If you believe your service was suspended or terminated in error, you may appeal by writing to legal@dynhost.co.uk within 30 days.