Email hosting & Mail Gateway (ZenaHost)

If email is mission‑critical, it’s not enough to “have an inbox”: you need continuity, filtering, monitoring and recovery procedures. On ZenaHost we build email and mail security solutions powered by a Proxmox Mail Gateway cluster, to reduce spam/viruses and improve mailflow reliability.

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Hestia Control Panel

For many ZenaHost mail and web stacks we expose day‑to‑day administration through Hestia Control Panel: a clean, open‑source panel that covers domains, mailboxes, aliases, DNS, databases and SSL in one place, without forcing you through a maze of legacy screens. Customers get straightforward self‑service (create mail users, reset passwords, enable Let’s Encrypt, adjust DNS) while we keep the underlying platform patched and monitored.

Why it helps security: Hestia favours sensible defaults and a smaller footprint than heavyweight alternatives: TLS issuance hooks, firewall integration, and clear separation between user spaces. Together with gateway filtering (e.g. Proxmox Mail Gateway) and our backup/monitoring stack, you get usable mail operations with fewer risky “quick fixes” done by hand on production servers.

Mail admin without friction: mail domains, accounts, quotas, forwarding and DKIM/DNS helpers where the stack exposes them.
Fewer mistakes: guided flows reduce mis‑clicks that often cause outages or weak TLS/DNS states.
Aligned with operations: what you do in the panel maps cleanly to how we run restores, upgrades and incident response.

Business mail filtering (Proxmox Mail Gateway)

A mail gateway is the “shield” in front of your email: it filters spam and malware, protects mailflow and makes security manageable without burdening end users. Proxmox Mail Gateway enables granular policies and effective quarantine.

🛑 Quarantine & fast release Quarantine for suspicious messages and controlled release for false positives.

⚙️ High availability Cluster design to reduce single points of failure and keep mailflow running.

💾 Backup & recovery Options for inbound-flow backup and recovery procedures (useful for human errors too).

🧯 Protection during outages Queue/flow handling when servers or connectivity degrade, to avoid losing important email.

Filters: anti‑spam / anti‑virus, plus per‑domain, group and user policies.
Management: admin console and day‑2 operating procedures.
Monitoring: metrics and alerts for anomalies (volumes, errors, queues, suspicious patterns).
DNS reputation: blacklist monitoring and remediation when needed.

Email hosting (business / ISP-like)

Scalable email hosting with access from any client and device. We can support “ISP‑like” needs (many accounts, delegation, groups, multiple domains) or business scenarios with SLA and tighter governance.

Usage-based model: costs follow the number of accounts and scope (project‑dependent).
Migrations: mailbox migration/import with minimal downtime and a cut‑over plan.
Management: interfaces and processes for provisioning, resets, troubleshooting and ticketing.
Compatibility: IMAP/SMTP, guided setup where applicable, mobile + desktop access.

Common problems this solves

Too much spam/phishing

Filtering and policies reduce risky messages before they reach users.

Deliverability and blacklists

We monitor mailflow and reputation signals and remediate when needed.

Outages and mail queueing

A gateway can buffer and manage flow when systems degrade, avoiding lost mail.

When it makes sense

Businesses where email is critical (sales, support, legal/admin).
Need to reduce spam/phishing and increase control and traceability.
Multiple domains and many users (scalability + operational management).
HA and continuous mailflow requirements.

For domains/DNS: zenadomains.it. For managed hosting: zenahost.it.