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Nameservers · These nameservers report their software version via version.bind/version.server, which helps attackers find known vulnerabilities: a1-159.akam.net: "41824.4"; a1-159.akam.net: "41824.9"; a18-64.akam.net: "48878.32"; a18-64.akam.net: "48878.30"; a22-66.akam.net: "48878.33"; a22-66.akam.net: "48878.29"; a24-65.akam.net: "48878.31"; a24-65.akam.net: "48878.33"; a3-66.akam.net: "41824.9"; a3-66.akam.net: "41824.6"; a5-67.akam.net: "41824.9"; a5-67.akam.net: "41824.7". Hide or replace the version string.

SOA · refresh 15m is outside 20m–1d. Current values: refresh 15m, retry 5m, expire 14d, negative TTL 5m.

MX · The following MX hosts could not be resolved to IPv6 addresses: mad666.in.tmes.trendmicro.com

MX · Only one MX record found. For better email reliability, consider adding at least one backup MX server.

DNSSEC · DNSKEY signatures expire at 2026-10-25T01:33:53Z (in 62h0m0s). Check that re-signing works.

DKIM · 1024-bit RSA keys are the minimum and are considered weak today: selector1 (1024 bits), s2 (1024 bits). Rotate to a 2048-bit key.

TLS · MTA-STS is not configured, so other mail servers fall back to unencrypted delivery when TLS fails or is stripped by an attacker. Publish a _mta-sts TXT record and a policy at https://mta-sts.<domain>/.well-known/mta-sts.txt.