Check the Domains FAQ if you don't find what you're looking for. Getting your domain set up to work with Microsoft 365 can be challenging. The DNS system is nitpicky to work with, and the DNS setup for your domain affects important business activities, like email!
DNS Checker - DNS Propagation Check & DNS Lookup DNS Propagation Checker. whatsmydns.net lets you instantly perform a DNS lookup to check a domain name's current IP address and DNS record information against multiple name servers located in different parts of the world. This allows you to check the current state of DNS propagation after having made changes to your domain's records. intoDNS: checks DNS and mail servers health IntoDNS checks the health and configuration and provides DNS report and mail servers report. And provides suggestions to fix and improve them, with references to protocols’ official documentation. HAD Email Auth Tester test - See your DNS-based email authentication stance from the outside. Email messages to tester@email-test.had.dnsops.gov will have SPF, DKIM checks performed, and a test for DMARC. A reply will be sent with the findings. The reply is sent to the address in the MAIL FROM of the request.
Domain Blacklist & Email Spam Check | UltraTools
Regular use of UltraDNS Email Test and RBL Database Lookup tools can help administrators keep email safe from spam and phishing, optimize mail server performance, and ensure 100% availability so that employees and business partners can securely and reliably send and receive email traffic in a timely manner. To help ensure your emails reach your recipients' inboxes, set up custom DomainKeys Identified Mail (DKIM) authentication for your domain. Inbox Service Providers (ISPs) like Google, Yahoo, and Microsoft use DKIM as a way to scan incoming emails for spam or spoofed addresses. Check a DNS record. To check a specific DNS record, you need to specify the nslookup command, an optional record type (for example, A, MX, or TXT), and the host name that you want to check. Note: If you omit the record type, it defaults to A. The following example shows how to check A records for rackspace.co.uk:
About Complete DNS Health Check Tool. Domain name system is the initial setup which a domain requires to operate. If DNS records lack healthy setup and are set up without reviewing proper documentation, then it may lead towards warnings and errors in DNS, and sometimes it may break the chain between your visitors and server.
DNS Propagation Checker. whatsmydns.net lets you instantly perform a DNS lookup to check a domain name's current IP address and DNS record information against multiple name servers located in different parts of the world. This allows you to check the current state of DNS propagation after having made changes to your domain's records. intoDNS: checks DNS and mail servers health IntoDNS checks the health and configuration and provides DNS report and mail servers report. And provides suggestions to fix and improve them, with references to protocols’ official documentation. HAD Email Auth Tester test - See your DNS-based email authentication stance from the outside. Email messages to tester@email-test.had.dnsops.gov will have SPF, DKIM checks performed, and a test for DMARC. A reply will be sent with the findings. The reply is sent to the address in the MAIL FROM of the request. The Office 365 DNS Diagnostic and DNS configuration