Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
slac.stanford.edu
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-26 05:18:33 UTC · ↺ Refresh
MX Hostnames
- mailgate11.slac.stanford.edu
- slac-mailgate.slac.stanford.edu
- mailgate10.slac.stanford.edu
MX Priorities
- slac-mailgate.slac.stanford.edu: 10
- mailgate10.slac.stanford.edu: 30
- mailgate11.slac.stanford.edu: 30
A / AAAA Records
- 134.79.138.26 ↩ www3-lb.slac.stanford.edu
Mail Server IPs
- 52.250.90.85 ↩ slac-mailgate.slac.stanford.edu
SOA Record
Raw SOA
dnsmaster1.slac.stanford.edu postmaster.slac.stanford.edu 3603252207 1800 900 1209600 86400
Primary NS (mname)
dnsmaster1.slac.stanford.edu
Admin Email (rname)
postmaster@slac.stanford.edu
Serial
3603252207
Refresh
1800s
Retry
900s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
ns-ext3.slac.stanford.edu
ns-ext1.slac.stanford.edu
adns2.es.net
adns1.es.net
argus.stanford.edu
ns-ext2.slac.stanford.edu
ns-ext4.slac.stanford.edu
SPF Record
✓ Soft Fail (~all)
v=spf1 ip4:134.79.0.0/16 ip4:52.250.90.85 ip6:2620:114:d000::/44 ip4:74.122.248.0/21 ip4:35.80.141.6 ip4:44.229.121.55 ip4:148.59.100.16/28 include:_taleo-a.slac.stanford.edu include:_taleo-b.slac.stanford.edu include:servers.mcsv.net include:spf-us.wfs.cloud include:spf.protection.outlook.com ~all
📊 DNS lookups: 6/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected],mailto:[email protected]; ruf=mailto:[email protected]; sp=none; fo=1; pct=100; adkim=r; aspf=r
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected],mailto:[email protected]
↳ Subdomain policy: none
DKIM Selectors
✓ 5 found
selector1._domainkey
selector2._domainkey
default._domainkey
s1._domainkey
s2._domainkey
✓ DKIM properly configured for selector: selector1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
9 records- smartsheet-site-validation=I5LXsA5MUX6puGas15WlAzjH9zcEMbIm
- adobe-idp-site-verification=986e3e82-b8be-4e83-a266-30027abdc60a
- MJtmrcwlDbykSI/6Q5PspI7Ei03LOSkCZS7l/LAnlzYctlzgDbVTKuji5OfDtvB8bapLXGChLMwCh0iOKFzYSA==
- atlassian-domain-verification=W4E7nKIJqkGQ7f5RdNArvYMwxwhGbjVfweerMSVpXFh9KA48pD8YR/2JIRGyvmgx
- ibmid=340467ea-3bff-4d17-87ac-0e9118269cc2
- MS=ms27072893
- 943721a6-d181-4134-b9c3-d3bcf2d78635
- SPFv=spf1 ip4:134.79.0.0/16 ip4:52.250.90.85 ip6:2620:114:d000::/44 ip4:74.122.248.0/21 ip4:35.80.141.6 ip4:44.229.121.55 ip4:148.59.100.16/28 include:_taleo-a.slac.stanford.edu include:_taleo-b.slac.stanford.edu include:servers.mcsv.net include:spf-us.wfs.cloud include:spf.protection.outlook.com ~all
- jamf-site-verification=RsKD2o-oIZuhbTlH_PEIYQ
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