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CometVPS Firewall Blocking Incoming/Outgoing Connections - No Response from Support
Hi everyone,
My CometVPS VPS appears to be restricted by their external/physical firewall. Both incoming and outgoing connections on custom ports are blocked, including outbound SMTP on port 465.
I'm running Ubuntu 26.04.1 LTS, with no firewall configured on the server.
I've tested connectivity using both a browser and telnet, but connections time out. This strongly suggests the issue is at the provider's network level.
I've raised support tickets, but unfortunately, there's been no response.
Has anyone faced similar issues with CometVPS? How can I get these restrictions removed or get their support team to respond?
Any help would be appreciated.
Comments
Maybe mail ports are blocked by default.
This. Unless explicitly stated, assume it's blocked.
The destination port?
Hello,
Mail ports are blocked by default. They can be unblocked by submitting a request in the portal under Network -> SMTP.
I’ve submitted the SMTP unblock request with all the necessary details. Initially, I assumed the restrictions were configured at the server level, but it turns out the situation is different like destination is also blocked.
And, I’m also experiencing issues with other custom ports. I’ve already raised a support ticket with screenshots. For example, Docker containers are running and accessible internally, but external connections are failing, which suggests that the physical/network-level firewall is blocking the traffic.
I’m also unable to configure a separate SSH port due to these restrictions.
Could you please review the network-level firewall rules for my VPS and clarify whether custom inbound and outbound ports can be opened?
It'll always be the destination port that's blocked (i.e. outgoing connections to TCP/25). I doubt there are many providers that block incoming mail.
I opened up a ticket back in January to have SMTP unblocked, and support unblocked the ports within a few minutes. No issues relaying email since then.