MTA-STS on cPanel and DirectAdmin: Policy File and TLS-RPT
Set up MTA-STS on cPanel or DirectAdmin: create the mta-sts subdomain, host .well-known/mta-sts.txt with a valid certificate, add the DNS and TLS-RPT records and test.
October 6, 2026
Mail server IP blacklisted: delisting runbook Pro
What to do with a mail server IP blacklisted by Spamhaus, Barracuda or Microsoft: find and stop the source, clean the queue, fix rDNS, SPF, DKIM and DMARC, delist, and relay mail meanwhile.
September 30, 2026
CAA and TLSA Checker: Free CAA Record and DANE Test
Reads CAA records (including those inherited from parent domains), compares them with the CA of the live certificate, and checks TLSA records for HTTPS and the MX hosts against DNSSEC and the served certificate.
September 30, 2026
SIP SRV Checker: Free NAPTR, SRV and SIP TLS Test
Checks the DNS records SIP phones and trunks use to find your server: NAPTR transport preference, SRV records for UDP, TCP and TLS, and whether every target resolves correctly.
September 30, 2026
Domain Health Checker: Free Score for DNS, SSL, Email and Headers
One scan that scores a domain out of 100 across DNS, HTTPS, security headers and email authentication, with a prioritised list of fixes.
September 30, 2026
SIP SRV Records: DNS Setup for 3 Transport Types
How SIP clients find a server through DNS (NAPTR, then SRV, then A/AAAA), the exact records to create for UDP, TCP and TLS, how priority and weight give failover, and how to test the result.
September 30, 2026
DNSSEC Checker
Check whether a domain is signed with DNSSEC: DS records at the registry, DNSKEY records in the zone, matching key tags, algorithms and live validation through Cloudflare and Google.
September 29, 2026
WHOIS Lookup: Free RDAP Domain and IP Owner Check
Look up domain registration (registrar, dates, status, name servers, DNSSEC), IP address ownership (network, range, abuse contact) and AS numbers using the registries' RDAP service.
September 29, 2026
Email Domain Health Check
One check for a domain's email setup: MX, SPF, DMARC, MTA-STS, TLS-RPT, BIMI, CAA and DNSSEC, with a pass/warn/fail for each.
September 29, 2026
MX Lookup
Find the mail servers for a domain in priority order, with each server's IP address and reverse DNS, and flag MX hosts whose PTR record does not match.
September 29, 2026
Reverse DNS Lookup: Free Bulk PTR Check for 25 IPs
Look up the PTR records for up to 25 IPv4 or IPv6 addresses at once and check that each hostname resolves back to the same IP (forward-confirmed rDNS).
September 29, 2026
DNS Lookup: Query Any Record Type
Look up A, AAAA, CNAME, MX, NS, TXT, SOA, CAA, DS, DNSKEY and HTTPS records for any domain from 17 public resolvers or the domain's own authoritative name server, with DNSSEC validation status.
September 29, 2026