Deutsch
Virtarix VPS and VDS services do not support mail-server workloads, and email ports are blocked. This includes running an SMTP server or relay, hosting mailboxes, and operating a service for transactional messages, newsletters or bulk email.
The restriction applies to the workload as well as the network ports. Changing the port or routing the same mail-server setup through another service does not create an exception.
Why port 25 is associated with the restriction
Mail servers use TCP port 25 to transfer messages between domains. Public SMTP services can be abused for spam, including when an otherwise legitimate server or account is compromised. Abusive traffic can damage IP reputation and lead to blocklisting.
Port 25 is therefore a familiar reference point for email restrictions. On Virtarix, however, the policy covers mail-server workloads and email ports generally. It is not limited to one SMTP listener.
What this means for a deployment
A Virtarix VPS or VDS must not act as a mail server, mailbox host or SMTP relay. The restriction covers receiving and relaying mail as well as sending it, including software such as Mailcow.
Alternative submission ports, a relay configuration or a tunnel do not change whether the workload is supported. There is no published port-unblocking or exception process for running these workloads on Virtarix.
If email hosting is a core requirement, select a separate service that explicitly supports it before planning the deployment.
Email for websites and applications
Use a separate external email service for delivery such as password resets, account notices, receipts and monitoring alerts. Keep the email-server and SMTP-relay roles outside the Virtarix VPS or VDS.
Follow that email service's documentation for account security, sender authentication, domain records and delivery monitoring. Confirm how the application integrates with it rather than treating an alternate SMTP port as a workaround for the hosting restriction.
What the restriction does not provide
Blocking email ports is not a managed security or deliverability service. Virtarix does not operate the customer's application, certify its integrations or manage the reputation of an external email account.
Virtarix supplies self-managed VPS and VDS infrastructure. You remain responsible for the software, access controls, monitoring and external services used by your application.
