FAQS

Technical Issues

Q: Why can't I connect to my server using SSH? A: The server's password might not have been set yet. Please wait a few minutes and try again. If the issue persists, use Doprax’s terminal (it uses private key authentication). Q: What should I do if my application fails to deploy? A: Ensure the deployment environment is configured correctly and all dependencies are listed in your requirements.txt or Dockerfile. Check the logs in the deployment tab for more details. Q: How can I debug server errors? A: You can use the monitoring tools in the dashboard or SSH into the server and check /var/log for logs. Q: SSH protocol seems blocked by my ISP — what should I do? A: Try using the Doprax web terminal, which connects via private key authentication and does not rely on port 22. Q: Why are email ports (25, 465, 587) blocked? Can I open them? A: These ports are blocked by default to prevent spam. You can: - Request Doprax support to disable the firewall for your server. - Use a trusted third-party relay (e.g., SendGrid, Mailgun, AWS SES). - Use port 2525 if your email provider supports it. Q: Why doesn’t my tunnel work on a Hetzner server but works on OVH? A: Hetzner servers have a default firewall enabled. Only ports 19000–19100 are open for tunnels. To open other ports, contact support to disable the firewall. Q: My server disconnects frequently. How can I fix it? A: Check your network connection and verify the server firewall allows persistent SSH sessions. Using ServerAliveInterval in SSH config may help. Q: I lost SSH access after reboot — what should I do? A: - Check the VM status in the panel. - Try rebooting from the dashboard. - If still inaccessible, use the Doprax terminal or Rescue Mode. - If the terminal shows a black screen, contact support. Q: My server is running, but my app isn’t accessible. A: Ensure the app listens on the right port and the firewall allows traffic. Check logs for runtime errors. Q: Why is my server not responding to ping or SSH even though it’s online? A: Possible causes: - Firewall blocking connections (especially on Hetzner). - Network routing problems. - SSH misconfiguration. Try restarting the VM or contacting support. Q: How can I open port 587 or 465 for email? A: Contact support to disable the firewall for your server. Q: Can you permanently disable the firewall for my account? A: It’s possible but not recommended, as it may trigger abuse detection. Request it only when necessary. Q: Why does my VPS reboot randomly? A: - High resource usage (check CPU/RAM). - Datacenter maintenance. - Misconfigured cron jobs (crontab -l). Q: My VM is stuck in “Deploying” or “Initializing.” What should I do? A: - Wait a few minutes and refresh the panel. - If it doesn’t change, delete and recreate it. - Avoid creating or deleting too many VMs rapidly; each deployment needs a few minutes to complete. Q: What is Rescue Mode in Doprax? A: Rescue Mode boots your VPS into a temporary recovery OS for data recovery or repair. It lets you: - Reset passwords or SSH keys. - Repair corrupted filesystems. - Back up or restore files. Note: Data remains intact unless manually modified. Q: How can I enable or exit Rescue Mode? A: - Enable: Go to your VM dashboard → Rescue Mode → Confirm. - Exit: Reboot or click Exit Rescue Mode. No extra cost applies. Q: My VPN or Marzban node isn’t passing traffic, but ping works. Why? A: On Hetzner, only ports 19000–19100 are open for tunnels. Use one of them. Q: NTP (UDP 123) won’t sync time. Why? A: Some upstream firewalls block outgoing UDP 123. This won’t affect functionality but may delay time sync. Q: My SSH key login shows “Private key is empty.” How to fix it? A: Doprax uses password authentication. Use the root password shown in your panel.

Account-related questions

Q: How do I reset my Doprax password? A: Go to the login page, click on "Forgot Password," enter your registered email, and follow the instructions. Q: Why can't I verify my email address? A: Ensure the email is entered correctly, and check your spam folder for the verification email. Q: How do I change the email associated with my account? A: Contact Doprax support to update your email address. Q: My account credit has run out, and the servers are off. Do I need to turn them on manually? A: Yes, you will need to manually turn on your servers once you add more credit. Q: I bought a domain yesterday, but it's not showing in my profile. A: Currently, each domain is linked to a specific server. When the server is deleted, the domain is also deleted. Q: I’m unable to log in even after resetting my password. What should I do? A: Clear your browser cache or try logging in from an incognito window. If the issue persists, contact Doprax support. Q: Do Doprax servers ignore DMCA complaints? A: No. Doprax complies with DMCA and provider policies. Any server involved in DMCA violations may be suspended immediately. Q: Why is Cloudflare blocking a server’s IP? A: Some IP addresses may be blacklisted by Cloudflare due to previous abuse reports. To avoid this issue: - Change the server's IP (available for Hetzner at a cost of $1). - If on another provider, delete and recreate the server to get a new IP. - Before purchasing a new server, test its IP using external blacklist-checking tools. Q: Why does UDP traffic not work on some servers? A: UDP traffic should function normally across all providers. However, if UDP is blocked: - Check firewall rules in the VM panel. - Ensure that the application using UDP is correctly configured. - If the issue persists, contact support for investigation. Q: Are there any datacenters with port speeds above 1 Gbps? A: - Hetzner: Typically 1 Gbps. - DigitalOcean: Up to 1 Gbps. - OVH: 100 Mbps to 500 Mbps, depending on the plan. - Vultr: 1-2 Gbps, making it one of the fastest options. Q: Can a Doprax-assigned domain be used with Cloudflare? A: No, Doprax subdomains cannot be manually added to Cloudflare because they are already managed under Doprax’s Cloudflare account. If a custom domain is owned, it can be linked to Cloudflare by changing its nameservers. Q: The ports on my German server are not accessible externally. Why is this happening? A: If you are using Hetzner, their firewall may be blocking access to certain ports. Check their control panel and modify firewall rules to allow necessary ports. Q: Which protocols can I use with Vultr virtual machines? A: Vultr does not impose protocol restrictions, so you can use any protocol that your ISP and network allow. Common protocols include TCP, UDP, ICMP, and GRE for tunneling. Q: Is port 25 open on virtual machines by default? A: Many cloud providers block port 25 to prevent spam. If port 25 is blocked, use alternative SMTP ports like 587 or 465. Q: Can I see my daily charge or usage breakdown? A: At the moment, Doprax does not provide a daily billing summary. You can view your total usage and current balance in the Billing section. Q: I sent USDC instead of USDT — what happens? A: Doprax only supports USDT (TRC20). Sending USDC or another token will not automatically credit your account and may result in permanent loss of funds.

Billing and Financial Questions

Q: Why was I charged unexpectedly? A: This could be due to additional traffic or other services used beyond your plan's allowance. Check the Billing section for details. Q: What is the refund policy for unused services? A: Doprax does not offer refunds for unused services. However, you can delete servers to stop further charges. Q: I have purchased an hourly server. Can I switch to a monthly plan? A: All servers operate on a pay-as-you-go hourly billing model. As long as you have sufficient credit, the server remains active. Monthly billing is not available. Q: Why has my account credit spent more than my account cost? A: Check for extra traffic charges in the Network section of each VM. High usage rates may result in additional charges. Q: Does the image showing "Unlimited" mean truly unlimited traffic? A: Yes, but this applies only to OVH. Other providers may have fair usage policies, so check terms of service for limits. Q: How can I view a detailed breakdown of my charges? A: View a detailed billing breakdown in the Billing History section of your dashboard. Q: I want to get a Hetzner VPS, but the traffic costs are high without 20,000 GB. Why? A: Hetzner’s included traffic varies by location: - Germany & Finland: 20TB included - USA & Singapore: Only 1TB or 2TB included Q: Why does Vultr allow more than 1,000GB of traffic? A: Vultr provides 1TB per month, but there is a daily usage limit. Exceeding it incurs additional charges. Q: Can a server be switched from hourly billing to a monthly plan? A: No, all servers are hourly billed. Monthly billing is not available. Q: What happens if an account runs out of credit? A: - All active servers shut down automatically. - After adding credit, servers must be manually restarted from the panel. Q: Are both upload and download traffic counted toward usage? A: Yes, both upload and download traffic count toward total bandwidth usage. Track usage in the Network tab. Q: Can a refund be requested for a mistakenly charged domain? A: If a domain was charged but not assigned, contact support for a possible refund. Q: I have added credits, but payment is pending for more than 24 hours. Why? A: Processing times depend on the payment method. Crypto transactions may take longer. If delay exceeds 24 hours, contact support with the transaction ID. Q: I charged my account with TRX, but it hasn’t been credited. What should I do? A: TRX payments usually process within an hour. Check the transaction hash on the blockchain. If confirmed but not reflected, contact support with the transaction details. Q: I paid using Binance Smart Chain (BNB), but balance hasn’t been added. How can I resolve this? A: Ensure the correct amount was sent to the designated wallet and confirmed on the blockchain. If deducted but not credited, provide the transaction hash to support. Q: My Vultr server is consuming my account balance too quickly. Why? A: Vultr charges hourly, and extra charges apply for bandwidth overages or snapshot storage. Check usage in the billing section. Q: Does shutting down a server stop billing, or will I still be charged? A: Shutting down does not stop billing. Resources like CPU, RAM, and storage are still allocated. To stop charges, delete the server. Q: How is the cost calculated if I stop my server but do not delete it? A: Maintenance and resource allocation costs are included. The server price applies whether running or stopped. Q: Why is my balance depleting faster than expected? A: Fast depletion occurs if you create and delete many VMs quickly. Providers charge a minimum of one hour per VM, even if deleted within minutes. Q: How is excess bandwidth charged? A: - Hetzner: $2 per extra TB - DigitalOcean & Vultr: $20 per extra TB Billing is based on total usage, not daily limits. Q: Why is my traffic deducted faster even though I didn’t use it all? A: Bandwidth is calculated on a 30-day rolling window. If consumption is faster than average, the system pre-deducts temporarily. Unused balance is refunded automatically when average usage normalizes.

Product/Service Usage Questions

Q: Is a Doprax VM the same as a VPS? A: Yes. VPS (Virtual Private Server) is the general industry term for this type of hosting. On Doprax, you can deploy VMs across several infrastructure options, including our own ProVM as well as Hetzner, OVH, and Vultr. Whichever provider you choose, it's the same kind of service people mean when they search for "VPS." Q: How do I create and deploy a new server? A: Use the Doprax dashboard to configure and deploy your server. Choose the desired specifications and click "Deploy." Q: What are the supported programming languages and frameworks? A: Doprax supports all major languages (Python, Node.js, Java, etc.) and frameworks (Flask, Django, React, etc.). Q: Can I integrate Doprax with external tools like GitHub? A: Yes, Doprax allows you to link your GitHub repository for seamless deployment. Q: Where can I see my free quota for traffic usage? A: Check the Network tab of your VM to view your free traffic quota. Q: Can I assign an IPv6 address to my VM? A: All VMs come with an IPv6 address by default. Q: Can I transfer files to this virtual server? A: Yes, use the scp command or any file transfer tool to move files from your local machine to the server. Q: How do I monitor my server’s performance? A: Use the Metrics tab in your Doprax dashboard to monitor CPU, memory, and network usage. Q: How fast is Vultr compared to OVH? A: Vultr servers usually offer 1 to 2 Gbps (1,000 to 2,000 Mbps), which is much faster than OVH. Q: Why are my VMs running too slow? A: Check the following: - CPU and RAM usage – Overloaded resources reduce performance. - ISP restrictions – Your provider might be throttling your IP. - Running processes – Use top or htop to check background activity. - Disk space – Run df -h to ensure the disk isn’t full. - Datacenter location – Far locations can increase latency. Q: My VPS connection keeps dropping, and I can’t maintain a stable SSH session. What should I check? A: Frequent disconnects could be due to: - Network issues from your ISP – try a VPN or different network. - High packet loss – Run ping [your_server_IP] -t to check for lost packets. - Firewall blocking SSH traffic – Disable Cloudflare proxy if used. - Low system resources – High CPU or RAM usage may cause crashes. Q: I need a test IP before purchasing a VPS to check network speed. Can you provide one? A: No, Doprax does not provide test IPs for security reasons. You can deploy a small instance, test the connection, and delete it if it doesn’t meet your needs. Q: I have a server with 4 vCPU, 8GB RAM, 80GB disk, and 20TB traffic. Can I extend the RAM and storage? A: This depends on the provider. Some allow live upgrades, while others require migration to a new plan. Check your cloud provider’s documentation. Q: I am trying to set up a V2Ray server and use my router as the client. Is there any documentation on how to configure my router properly? A: Configuration varies by router model. Check if your router supports V2Ray or Shadowsocks. Alternatively, install a client on a device behind the router and forward traffic. Q: Why can’t I use WARP or other UDP-based services on Hetzner? A: Hetzner servers on Doprax have limited outbound UDP rules to prevent abuse. For full UDP support, use OVH or Vultr. Q: Is there documentation available on configuring a router to connect to a VPS from Doprax? A: Doprax does not have specific router guides, but general VPN and proxy guides can help. Ensure your VPS firewall allows incoming connections. Q: What is Rescue Mode and when should I use it? A: Rescue Mode lets you boot a temporary environment to recover lost SSH access, reset passwords, fix misconfigurations, or back up files. It does not affect existing data unless modified manually. Q: Does enabling Rescue Mode cost extra? A: No, Rescue Mode is free and included with your plan. Q: Can I open port 25 (SMTP) for email sending? A: Port 25 is blocked by default on all Doprax data centers to prevent spam. Use ports 587 or 465 for secure mail relaying. Q: How can I restore access if SSH port is filtered or closed? A: Use the Rescue Mode console from your VM dashboard to temporarily log in and modify SSH configurations or open firewall ports.

Server Management

Q: If I delete my server, do I pay for the whole thing? A: No. Doprax uses pay-per-hour billing — you only pay for the active time. Q: How can I transfer files to my VPS? A: Use the scp command or SFTP to move files between your local machine and the server. Q: Can I assign multiple IPs to a single server? A: Not yet. Currently, each server has one IP. Future updates may allow multiple. Q: Can I use my VPS for crypto mining? A: Absolutely not. Mining is strictly prohibited and may lead to immediate account suspension. Q: Can I deploy machine learning or AI models? A: Yes. Doprax supports frameworks like Flask, FastAPI, TensorFlow, and PyTorch. Q: Can I host a game server on Doprax? A: Yes, as long as it complies with Doprax’s Terms of Service. Q: How do I back up my data? A: - Use the Snapshot feature for full backups. - Optionally, copy files to external storage (Google Drive, AWS S3, etc.). Q: Does Doprax offer Windows servers? A: No. Windows is not supported due to licensing restrictions. Q: How can I request a PTR (Reverse DNS) record? A: Contact Doprax support and provide your server IP and desired PTR value. Q: Can I get all my server IPs and passwords in one file? A: No, for security reasons you must retrieve each manually from your dashboard. Q: How can I connect my domain to Cloudflare, and why does SSH stop after enabling the proxy? A: - Doprax subdomains are already under Cloudflare — no manual setup needed. - For custom domains, add them to your Cloudflare account and update nameservers. - Cloudflare proxy (orange cloud) only supports HTTP/HTTPS. SSH won’t work under proxy; disable it (turn cloud gray) for SSH access. Q: Why is VM deployment slow or stuck? A: - High demand in datacenter. - Too many VMs created or deleted rapidly. - Wait a few minutes and refresh. Each VM takes ~3 minutes to deploy. Q: Can I disable IPv6 on my VPS? A: Yes. Run: sudo sysctl -w net.ipv6.conf.all.disable_ipv6=1 Or request support to disable it permanently. Q: Is it okay to frequently create and delete many servers? A: - Hetzner: Not recommended — can cause IP issues. - Other providers: Allowed, but you’ll still be billed for the first hour per VM. Q: How do I fix OpenVPN login issues? A: OpenVPN creates .ovpn files with credentials in /etc/openvpn/ or /home/user/. If missing, reset the password with passwd. Q: My server password doesn’t work — what should I do? A: Verify it in your control panel. If incorrect, reset it or use Rescue Mode to regain access. Q: My server isn’t rebooting. Why? A: - High CPU or RAM usage may prevent shutdown. - Corrupted filesystem (run fsck). - Try rebooting via control panel. Q: How can I link an Iranian IP server to a domain? A: You can, but some registrars block Iranian IPs. Use Cloudflare DNS as a bridge. Q: Can I assign one domain to multiple servers? A: Yes, via DNS load balancing or a reverse proxy (e.g., Nginx). Currently, Doprax allows one domain per server. Q: Can I upgrade RAM or storage later? A: Depends on the provider — some support live upgrades, others require migration. Q: My Hetzner IP is blocked by ISPs — what now? A: Request an IP change (costs ~$1). Other providers require creating a new server. Q: Can I open port 25 for sending emails? A: No, it’s blocked by default. Use ports 587 or 465 instead. Q: How can I restore SSH access if port 22 is filtered? A: Boot into Rescue Mode and modify SSH or firewall configs. Q: Can I use Rescue Mode to recover data from a deleted server? A: No. Once a server is deleted, its data is permanently erased.

API & Automation

Q: How can I obtain an API key for managing servers? A: API keys can be requested from the Doprax API panel. Refer to the official Doprax API Documentation for detailed instructions. Q: Can I turn on multiple servers at once through the API? A: Yes, you can manage multiple servers using the Doprax API. Since there is no bulk restart option in the panel, scripting through the API is the most efficient method. Q: Can I get an API key to automate VM creation? A: Currently, Doprax does not issue public API keys for user-side automation. API functionality is managed internally. Q: Can I monitor or restart my VMs through the API? A: Yes, it’s possible via Doprax’s internal API endpoints, but you must first contact support to obtain access or guidance.