MailAuthWatch
A100/100

shopify.com

Solid. A couple of things could still be tighter. 1 item below, ordered by how much inbox it is costing you.

SPF PASSDKIM WEAK KEYDMARC REJECTMX OK
Monitor this domainRe-run checkMeasured 0s ago · 95 ms · public DNS

Fix these, in this order

ranked by impact
1
6 DKIM keys are 768-bit.

Selectors google._domainkey, mail._domainkey, pm._domainkey, m1._domainkey, smtpapi._domainkey, resend._domainkey are under 2048 bits, which some receivers already downgrade.

Do this: rotate to a 2048-bit key at the sending service.

Records found

SPF · TXT
v=spf1 include:_spf.google.com include:mail.zendesk.com include:sendgrid.net ~all
DMARC · _dmarc.shopify.com
v=DMARC1; p=reject; pct=100; fo=1; rua=mailto:dmarc-aggregate@shopify.com;ruf=mailto:dmarc-reports@shopify.com
DKIM · 10 of 79 selectors
google._domainkey · 1024-bit
mail._domainkey · 1024-bit
zendesk1._domainkey · 2048-bit
zendesk2._domainkey · 2048-bit
pm._domainkey · 768-bit
m1._domainkey · 1024-bit
smtpapi._domainkey · 1024-bit
resend._domainkey · 1024-bit
kl._domainkey · 2048-bit
kl2._domainkey · 2048-bit
MX · 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

Grade history

Free checks keep nothing. Monitoring records every daily measurement and alerts you on change.
History goes back as far as your subscription.

SPF OK

v=spf1 include:_spf.google.com include:mail.zendesk.com include:sendgrid.net ~all
DNS lookups
4 of 10 allowed
Final mechanism
~all
  • OK No problems detected.

Include tree

4 / 10
shopify.com0
├─ include:sendgrid.net+2
│    └─ ab.sendgrid.net
├─ include:_spf.google.com+1
└─ include:mail.zendesk.com+1

DKIM OK

DKIM selectors cannot be listed from DNS, so 79 selectors used by common providers were probed.

SelectorKeyRecord
googleRSA 1024-bit Weakv=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCYb9CEvB9Fl44NTJtFQAlzmnP5ZJ7T8kdJ…
mailRSA 1024-bit Weakv=DKIM1; g=*; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQC6FVv1tmxOilnHUpvqpf4jlVcidUZ…
zendesk1RSA 2048-bit OKv=DKIM1;t=s;n=core;k=rsa;p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA9IqdLrO3Zr2/56MHt8o…
zendesk2RSA 2048-bit OKv=DKIM1; t=s; n=core; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAmiSFNkgXrO3I8aO…
pmRSA 768-bit Weakv=DKIM1; k=rsa; p=MHwwDQYJKoZIhvcNAQEBBQADawAwaAJhANOtTzK6Ct6R4u976UZjFs1eiurj69J8l0P0LfRJ…
m1RSA 1024-bit Weakv=DKIM1; k=rsa; t=s; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDBK1ADXLeuEWjdU55akWS9PG6TmH/…
smtpapiRSA 1024-bit Weakv=DKIM1; k=rsa; t=s; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDPtW5iwpXVPiH5FzJ7Nrl8USzuY9z…
resendRSA 1024-bit Weakp=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQC0IhEE9pZDUzS7bCJuOKnG47OQ9waM9Xlv7Ve1cU+nL0tL39qy…
klRSA 2048-bit OKk=rsa; t=s; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAztcABv4gl6fHyhpWbKb7Fo/F9GLERtmn…
kl2RSA 2048-bit OKk=rsa; t=s; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAu/TgNziu/F6lDwPHmTKXWJ2nALXeLSof…
  • WarningDKIM selectors "google", "mail", "m1", "smtpapi", "resend" use 1024-bit keys. Rotate to 2048 bits.
  • WarningDKIM selector "pm" uses a 768-bit key. Keys under 1024 bits are rejected by Gmail; make sure nothing still signs with it.

DMARC OK

v=DMARC1; p=reject; pct=100; fo=1; rua=mailto:dmarc-aggregate@shopify.com;ruf=mailto:dmarc-reports@shopify.com
Policy
p=reject
Applies to
100% of failing mail
Aggregate reports
mailto:dmarc-aggregate@shopify.com
  • OK No problems detected.

Mail exchange and extras

  • OK No problems detected.
MTA-STS
Not published optional: enforces TLS for inbound mail
TLS-RPT
Not published
BIMI
OK v=BIMI1; l=https://vmc.digicert.com/8833b699-1227-41ee-b185-cc2d9a08e213.svg; a=https://vmc.digicert.com/8833b699-1227-41ee-b185-cc2d9a08e213.pem;

How the grade is calculated

Score 100/100. SPF present and valid. SPF ends with ~all. DKIM found (10 selectors). DKIM key is 2048-bit or stronger. DMARC present and valid. DMARC policy is reject. DMARC aggregate reporting enabled. SPF contributes up to 35 points, DKIM up to 25, DMARC up to 40 (policy strength and reporting). Any critical issue caps the grade at C. Lookups that failed are shown as "not measured" and never counted as missing.

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