resend.com

Live email deliverability and anti-spoofing audit. Every value below was read from public DNS at the moment this page was generated.

Findings

• spf

  SPF ends in ~all (softfail); unauthorised mail is marked rather than rejected.

  v=spf1 include:_spf.google.com ~all

  Fix: Move to -all once you have confirmed all senders are listed.

• mta sts

  No MTA-STS policy, so inbound mail can be downgraded to an unencrypted connection.

  Fix: Publish _mta-sts.resend.com and host a policy at https://mta-sts.resend.com/.well-known/mta-sts.txt.

• mx

  Mail is handled by Google Workspace.

  1 aspmx.l.google.com, 5 alt1.aspmx.l.google.com, 5 alt2.aspmx.l.google.com, 10 alt3.aspmx.l.google.com, 10 alt4.aspmx.l.google.com

• dmarc

  DMARC is enforcing with p=reject.

  v=DMARC1; p=reject; pct=100; rua=mailto:ozsm6m1q@ag.us.dmarcian.com,mailto:dmarcreports@resend.com; ruf=mailto:ozsm6m1q@fr.us.dmarcian.com; fo=1;

• dkim

  DKIM keys found for 1 selector.

  google._domainkey

• bimi

  BIMI is published; supporting clients can show your logo.

  v=BIMI1; l=https://vmc.digicert.com/8882bf5e-bff7-4acd-aeb5-2158fe01a69a.svg; a=https://vmc.digicert.com/8882bf5e-bff7-4acd-aeb5-2158fe01a69a.pem

Records

curl "https://mailgrade.dev/v1/domain?domain=resend.com"

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