Simple DNS Plus - Knowledge Base

Daily operations

• Does the 10 connections limit on Windows XP affect Simple DNS Plus?
• How do I backup and restore Simple DNS Plus settings and data? (v. 5.x)
• How do I backup and restore Simple DNS Plus settings and data? (v.6.0 and later)
• How do I backup and restore Simple DNS Plus settings and data? (v.4.00 and earlier)

DNSSEC

• How to DNSSEC sign a zone with Simple DNS Plus

Domain names

• Does Simple DNS Plus support the new top level domain names? (.travel .mobi .jobs etc.)
• How do I register an Internet Domain Name?
• How do I update my domain name to be served by my own DNS servers?
• How to use domain names with international characters (IDN) in Simple DNS Plus and web-servers
• Using unqualified domain names (names with no dots)

Dynamic DNS

• Using DirectUpdate with Simple DNS Plus
• Using DynDNS Updater with Simple DNS Plus
• Using DynSite with Simple DNS Plus
• Does Simple DNS Plus support dynamic DNS updates?
• DynDNS clients supporting TSIG signed updates
• How to intercept dyndns.org (Dyn.com) updates from Internet/NAT routers
• HTTP based dynamic DNS service (DynDNS)

Features and functions

• ALIAS-records (Auto Resolved Alias)
• Does Simple DNS Plus support Active Directory?
• Does Simple DNS Plus support sub-domains (like subname.example.com)?
• Can I create my own e-mail server IP blacklist (RBL/DNSBL) with Simple DNS Plus?
• Is Simple DNS Plus compatible with other DNS servers?
• Can Simple DNS Plus be run as a Windows Service (a.k.a. "NT service")?
• How to bind an SSL certificate to the HTTP API

Firewalls / NAT routers / Proxy servers

• Using Simple DNS Plus with CCProxy
• Using Simple DNS Plus with WinGate
• How do I configure my firewall for DNS?
• How do I use Simple DNS Plus with a proxy server?
• How do I use Simple DNS Plus with my Cable/DSL Router (NAT Router)?

General DNS topics

• Publishing your SIP server address in DNS
• SRV records for Office 365
• The log shows a lot of requests for domain names ending with "_zonelist". What is this?
• What are MX records, and why do I need this to run an e-mail server?
• What is "DNS cache snooping" and how do I prevent it?
• What is a DNS amplification attack and how to mitigate it
• What is an ”open DNS server” and how do I fix it?
• Why can't I create a CNAME record for the zone name itself?
• View all articles in “General DNS topics”

Plug-ins

• Web-site domain filtering using the "Fixed IP Address" plug-in
• Alias Zones plug-in
• DHCP Server plug-in
• DNS Blacklist (DNSBL / RBL) plug-in
• Domain Blacklist plug-in
• Domain blacklist BOOT plug-in
• DynDNS Service plug-in
• TFTP Server plug-in
• View all articles in “Plug-ins”

Reverse DNS

• What is "reverse DNS" and do I need it?
• How to sub-delegate a reverse zone (IPv6)
• How do I get reverse DNS for my IP addresses delegated to my own DNS server?
• How to sub-delegate a reverse zone (IPv4)

Scripting and programming

• Sending Simple DNS Plus HTTP Commands
• Integration and scripting options

Setup and configuration

• Can I run multiple instances on the same computer? (Simple DNS Plus v. 5.0 and later)
• Simple DNS Plus on Windows Embedded Standard 7
• Simple DNS Plus on Windows Server Core
• Can I specify a TCP/IP port number for my web-server in DNS? (Other than the standard port 80)
• Upgrading configuration files from older Simple DNS Plus versions
• Using Simple DNS Plus with alternate roots
• Using Simple DNS Plus with Internet Connection Sharing (ICS)
• Configuring Windows to use local DNS server (Windows 8.1 / Windows 10 / Windows Server 2012R2)
• View all articles in “Setup and configuration”

Spam and Phishing

• Configuring SPF records
• Configuring DMARC records
• Configuring DKIM records

Support

• Version maintenance / End of Life (EOL) policy
• Free educational licenses
• Licensing FAQ

Troubleshooting

• Not resolving Internet domains / Returns RCODE 2 - Server Failure
• Program menus slow when accessed through Remote Desktop / Terminal Services
• Simple DNS Plus is not able to resolve domain names hosted on ns##.worldnic DNS servers. What could be wrong?
• Simple DNS Plus service fails to start on computer reboot
• Warning: Failed to Zone Transfer ... (RCODE 5 Refused...)
• Zone not transferred to or updated on secondary DNS server
• Error message: Cloud not start the Simple Dns Plus service(sdnsplus) - NET START returned exit code 2
• "The system failed to register host (A) resource records (RRs) for network adapter..." warning in Windows event log
• View all articles in “Troubleshooting”

Usage requirements

• What are the system requirements for Simple DNS Plus?
• I have a cable modem (always connected), but I only have one IP address. Can I still run a DNS server for my own domain name?
• I have an "always on" Internet connection (cable, DSL, etc.), but my IP address is assigned dynamically. Can I still run my own DNS server?

Web hosting

• Can I use Simple DNS Plus to make my web-server access different directories / files on my computer for different domain names? (Sometimes referred to as "virtual hosting")
• Virtual hosting with IIS (Internet Information Services) (IIS 6.0 (Windows XP / Server 2003) and earlier)
• Virtual hosting with IIS (Internet Information Services) (IIS 7.0 (Windows Vista / Server 2008) and later)
• Web redirection and "cloaking" (ASP.NET)
• Web redirection and "cloaking" (Classis ASP script)
• Configure web-site for access with and without the 'www' domain name prefix
• Can I do web redirection with Simple DNS Plus?

What's new

• New in Simple DNS Plus (v. 5.1)
• New in Simple DNS Plus (v. 5.3)
• New in Simple DNS Plus (v. 6.0)
• New in Simple DNS Plus (v. 9.0)
• New in Simple DNS Plus (v. 9.1)
• New in Simple DNS Plus (v. 5.2)
• New in Simple DNS Plus (v. 5.0)
• New in Simple DNS Plus (v. 7.0)
• View all articles in “What's new”

With 3rd party products

• Using OpenDNS.com with Simple DNS Plus
• Can I use the "Super Master/Slave" feature with other DNS servers?

DNS over HTTPS (DoH) / DNS over TLS (DoT)

• How to enable DNS over HTTPS (DoH) in Chrome
• How to enable DNS over HTTPS (DoH) in Edge
• How to enable DNS over HTTPS (DoH) in Firefox
• How to enable DNS over TLS (DoT) in Android
• How to enable DNS over HTTPS (DoH) in Windows 11
• How to enable DNS over HTTPS (DoH) in Windows Server 2022
• How to enable DNS over TLS (DoT) / DNS over HTTPS (DoH) in MacOS v. 11+
• How to enable DNS over TLS (DoT) / DNS over HTTPS (DoH) in IOS v. 14+