tools.wallacenetworks.uk
Enter a domain name into the search box above to retrieve DNS records.
• AUTODISCOVER
_autodiscover._tcp SRV records
Versions of Microsoft Outlook use these to locate the relevant Exchange server.
• ADSP
_adsp TXT records
Author Domain Signing Practices (Deprecated) were used to handle DKIM signed email for a domain.
I set to "dkim=discardable" which really meant "dkim=required".
• CAA
Certificate Authority Authorisation
This record of type TXT authorises a Certificate Authority to generate certificate for a domain.
• DMARC
_dmarc TXT records are policies to indicate how to handle email that fails DKIM & SPF checks
RFC7489 has more info if you like reading RFCs.
• MX
Mail eXchange records indicate where to deliver email to - with some exceptions
• NS
NameServer records are how to find the server(s) that gives you all the other records listed here
• SOA
Start Of Authority records prove the DNS is valid, in theory...
• TXT
TXT records including SPF, SenderID*, DMARC reports acceptance for a different domain, etc.
* SenderID is NOT recommended by DRAFT (2nd) NIST Special Publication 800-177 - Trustworthy Email
• SRV
Service records. this TYPE of dns record can be used for things like AUTODISCOVER records
Other tools on this site:
Find your public IP address
Third party DNS tools:
Google DNS | IntoDNS | Kitterman's SPF Query tool
Third party DNSSEC tools:
Verisign Labs DNSSEC Analyzer
Third party SSL test tools:
HTBridge Free SSL Scan | Qualys SSL Labs
Last Updated 2018/10/04 02:45 CET.
DNSSEC Activated 27th September 2018
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© 2018 Allan Wallace