Can I set custom PTR (Reverse DNS) records?

Absolutely. You have direct automated rDNS / PTR record control inside the ClientVPS Server Management console. Changes propagate to global DNS within 15 to 30 minutes.

How do you guarantee clean IP reputation?

Every allocated IPv4 is pre-verified against major RBLs (Spamhaus ZEN, Barracuda, SORBS, SpamCop). If an IP has historical issues prior to your provisioning, we swap it free of charge within 24 hours.

Can I install Mailcow, Postal, or Docker?

Yes. All plans grant full unrestricted root SSH access on Debian, Ubuntu, AlmaLinux, or Rocky Linux. You can deploy Mailcow UI, Postal, Exim, Postfix, or any custom mail transfer agent.

Do you offer multiple IPs for rotation?

Yes! Our Pro plan includes 2 Clean IPs, Business includes 4 Clean IPs, and Enterprise includes an entire clean /29 subnet (8 IPs) with automated rotational gateway capabilities.

Open Port 25 • Clean Dedicated IPs • Automated rDNS / PTR Control

High-Deliverability
SMTP & Mail Relay VPS

High-deliverability mail infrastructure engineered for transactional email, newsletters, and high-volume corporate relays. Open outbound Port 25, zero-blacklist clean IPv4 subnets, and instant rDNS management.

Open Port 25 Outbound

Clean Spamhaus-Safe IPs

Instant PTR / rDNS Portal

Dedicated Mail Nodes

High-Performance SMTP Server Plans

Dedicated mail nodes with open Port 25, pre-screened clean IPv4 addresses, and instant rDNS control.

SMTP Relay Starter

Port 25 Open

Ideal for transactional apps, sign-up verifications, and SaaS alerts

$31.45/ month

Billed annually ($377.40/yr)

Clean IPs1 Clean IPv4

CapacityUp to 150k emails/mo

2 vCPU (AMD EPYC™)

4 GB DDR5 RAM

60 GB Gen4 NVMe

1 Gbps Port Unmetered

2 vCPU Cores (AMD EPYC™)

4 GB DDR5 RAM

60 GB NVMe PCIe 4.0

1 Clean Dedicated IPv4 (0 Blacklists)

Outbound Port 25 Open & Unrestricted

1-Click rDNS / PTR Record Setup

Postfix / Exim / Docker Preinstalled

SPF, DKIM & DMARC Setup Guide

SMTP Relay Pro

Port 25 Open

Most popular configuration for newsletter marketing and medium business relays

$58.65/ month

Billed annually ($703.80/yr)

Clean IPs2 Clean IPv4

CapacityUp to 600k emails/mo

4 vCPU (AMD EPYC™)

8 GB DDR5 RAM

120 GB Gen4 NVMe

1 Gbps Port Unmetered

4 vCPU Cores (AMD EPYC™)

8 GB DDR5 RAM

120 GB NVMe PCIe 4.0

2 Clean Dedicated IPv4s (Spamhaus Safe)

Outbound Port 25 Fully Unblocked

Full Automated PTR / rDNS Portal Control

Mailcow / Postal 1-Click Suite

IP Warmup Strategy & Rotation Tools

24/7 Mail Deliverability Monitoring

SMTP Relay Business

Port 25 Open

Multi-IP rotation cluster for bulk enterprise campaigns and agency clients

$106.25/ month

Billed annually ($1275.00/yr)

Clean IPs4 Clean IPv4

CapacityUp to 1.8M emails/mo

6 vCPU (AMD EPYC™)

16 GB DDR5 RAM

240 GB Gen4 NVMe

1 Gbps Port Unmetered

6 vCPU Cores (AMD EPYC™)

16 GB DDR5 RAM

240 GB NVMe PCIe 4.0

4 Clean Dedicated IPv4s (Rotational Pool)

Open Outbound Port 25 Guaranteed

Custom Automated Forward & Reverse DNS

High-Throughput SMTP Pipeline Tuning

Dedicated Mail Queue Engine Support

Priority 15-Minute Technical SLA

SMTP Enterprise Subnet

Port 25 Open

Full clean /29 subnet for massive email deliverability pipelines & ISPs

$194.65/ month

Billed annually ($2335.80/yr)

Clean IPs8 Clean IPv4

Capacity5M+ emails/mo capacity

8 vCPU (AMD EPYC™)

32 GB DDR5 RAM

480 GB Gen4 NVMe

1 Gbps Port Unmetered

8 vCPU Cores (AMD EPYC™)

32 GB DDR5 RAM

480 GB NVMe PCIe 4.0

8 Clean Dedicated IPv4s (/29 Subnet)

Unmetered 1 Gbps Uplink, 10 Gbps on Request

Full Autonomous Reverse DNS Delegations

Custom MTA Architecture (PowerMTA / Haraka)

Direct Fiber Network Peering

Dedicated Mail Delivery Engineer Assigned

Why Choose ClientVPS for Dedicated Mail Infrastructure?

Built specifically to bypass restrictive hyperscaler policies and maximize inbox delivery rates.

Direct PTR / rDNS Control

Update reverse DNS pointers for any IP address instantly from the server control panel without waiting for human approval tickets.

Pre-Scanned Clean IP Pool

Every IP is audited against Spamhaus ZEN, Barracuda, and SORBS prior to delivery to ensure high sender reputation from day one.

1-Click Mail Stacks

Deploy full modern webmail and MTA suites including Mailcow Dockerized, Postal Mail Server, Haraka, or Postfix with standard DKIM setup.

Frequently Asked Questions

Got questions about our dedicated SMTP and mail relay servers?

Yes! Unlike mainstream hyperscalers that permanently block or restrict Port 25, our dedicated SMTP instances have outbound Port 25 unblocked and unrestricted from minute one.