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: 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.