4hosting hosting and DevOps documentation

Setup, security and operations guides for cPanel, VPS, dedicated and GPU servers at 4hosting, written for the engineers who run them.

Featured guide

Mailu and SMTP relay

Self-hosted mailboxes with webmail, a separate relay for application mail, and the DNS, SPF, DKIM and DMARC records set up before the first message goes out.

Read the guide

Getting started

From sign-up to a first site in production

Sign up, choose a plan on the pricing page and open the client panel. From there you attach your domain, publish the DNS records, enable a Let's Encrypt certificate and launch your first site or container. VPS and dedicated servers arrive with root access and the SSH public key you supplied when you ordered. If you would rather not do the first setup alone, it is a sensible use of your included hours.

WordPress hosting →cPanel hosting →

Server security guide

Questions and answers with commands you can run

The security guide is organised around the questions teams ask before an audit or after an incident: why node_modules should not stay on a production server, how to lock down SSH, which firewall rules matter first, what a 3-2-1 backup looks like in practice, how to serve HTTPS with HSTS and when a WAF earns its place. Each question has a page of its own with a short answer, worked examples and commands.

Open the security guide →

Included engineering hours

How DevOps, CyberSecurity and programming hours work

Hours are part of the subscription: 1 h per month from cPanel Advanced upward, 1–8 h on VPS, 5–10 h on dedicated servers depending on the plan, and 10 h on GPU servers. Open the client panel, choose DevOps services, describe the task and propose a deadline; the team then delivers. Hours are counted per calendar month and are not carried over. Work beyond the quota is accepted and billed separately.

Payments and invoicing →GDPR compliance →

Mailu and SMTP relay

Mail on your own domain, with DNS that passes the filters

This guide separates two jobs. Mailu hosts the mailboxes your people use, while an SMTP relay carries the automated mail your applications send, such as invoices and alerts. It then walks through the DNS records that decide delivery (MX, SPF, DKIM, DMARC and reverse DNS), with an example zone and advice on reading your sending reputation.

Migration planned together

Moving from another provider with minimal downtime

Migration is free and planned with you. We list the sites, databases and mailboxes, copy the data, test on a temporary domain and change DNS last, using a short TTL so that traffic and mail follow without a gap. On cPanel we use account transfer; on VPS and dedicated servers we use rsync and snapshots.

Backup and restore

Daily copies, off-site copies and tested restores

cPanel plans include a daily backup. On VPS and dedicated servers we define the retention policy, the off-site copies and the encryption together with you. The recommended baseline is the 3-2-1 rule (three copies, two media, one off-site) plus a scheduled test restore, because a backup that has never been restored is only a hope.

How we migrate →Backup and recovery →

Docker, Kubernetes and CI/CD

Containers and delivery pipelines in production

The service pages describe production container practice: minimal images built in CI, non-root users, isolated networks, secrets kept out of images, blue-green or canary rollouts, and observability with Grafana, Prometheus and Loki. Every topic has its own page listing the steps and the technologies involved.

Enterprise databases →Countries we serve →

Infrastructure and compliance

EU datacentres, DDoS protection and GDPR

Servers run in a European Union datacentre in Frankfurt, on AMD Ryzen/EPYC and Intel Core/Xeon hardware with DDR4/DDR5 memory (ECC on the server tiers) and NVMe storage. L3/L4 DDoS protection is included. We sign an Article 28 GDPR data processing agreement, use standard contractual clauses where data leaves the EEA and work in alignment with ISO 27001. Local VAT is shown separately on every invoice.

Docker and Kubernetes →AI stack: vector databases and GPU →CDN and security →