tools.wallacenetworks.uk | DNS Lookup Tool
Enter a domain name into the search box above to retrieve DNS records.
_autodiscover._tcp SRV records
Versions of Microsoft Outlook use these to locate the relevant Exchange server.
_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".
Certificate Authority Authorisation
This record of type TXT authorises a Certificate Authority to generate certificate for a domain.
_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.
Mail eXchange records indicate where to deliver email to - with some exceptions
NameServer records are how to find the server(s) that gives you all the other records listed here
Start Of Authority records prove the DNS is valid, in theory...
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
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:
DANETools DANE validator | Verisign Labs DNSSEC Analyzer
Third party SSL test tools:
HTBridge Free SSL Scan | Qualys SSL Labs
Last Updated 2018/10/27 14:45 CET.
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© 2018 Allan Wallace