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simon.com

Checked 2026-10-22 10:43 UTC · first added 2026-10-21

!Passed with warnings Score 91 of 100

Domain & DNS

ok

30 passed 0 warn 0 failed

Areas

iRegistration iDelegation iNameservers ✓SOA iDNSSEC ✓Records

Recent checks

✓

Full report

Domain & DNS report for simon.com ›

Mail

warn

29 passed 3 warn 0 failed

Areas

✓SPF ✓DMARC !DKIM ✓DNSSEC !MX !TLS ✓BIMI

Problems

!

Single MX host, no backup

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

#12
!

1024-bit DKIM key

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.

#23
!

Not configured

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.

#32

Recent checks

!

Full report

Mail report for simon.com ›