Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
isr.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-04-02 02:46:53 UTC · ↺ Refresh
MX Hostnames
- isr-de.mail.eo.outlook.com
MX Priorities
- isr-de.mail.eo.outlook.com: 0
A / AAAA Records
- 78.47.70.164 ↩ wan1.isrcloud1.de
Mail Server IPs
- 52.101.68.3 ↩ mail-db7pr03cu00403.inbound.protection.outlook.com
- 52.101.73.22 ↩ mail-am7pr05cu00106.inbound.protection.outlook.com
- 52.101.68.18 ↩ mail-db4pr02cu00302.inbound.protection.outlook.com
- 52.101.68.0 ↩ mail-db3pr0202cu00100.inbound.protection.outlook.com
- 2a01:111:f403:ca09::1 ↩ mail-as9pr07cu00301.inbound.protection.outlook.com
- 2a01:111:f403:ca04::4 ↩ mail-db4pr02cu00204.inbound.protection.outlook.com
- 2a01:111:f403:ca04::e ↩ mail-db8pr02cu00106.inbound.protection.outlook.com
- 2a01:111:f403:ca09::3 ↩ mail-am6pr04cu00303.inbound.protection.outlook.com
SOA Record
Raw SOA
ns-1921.awsdns-48.co.uk awsdns-hostmaster.amazon.com 1 7200 900 1209600 86400
Primary NS (mname)
ns-1921.awsdns-48.co.uk
Admin Email (rname)
awsdns-hostmaster@amazon.com
Serial
1
Refresh
7200s
Retry
900s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
ns-1921.awsdns-48.co.uk
ns-313.awsdns-39.com
ns-552.awsdns-05.net
ns-1101.awsdns-09.org
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com include:datevnet._spf.datev.de include:5381506.spf06.hubspotemail.net -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none;
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: selector1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
13 records- MS=283A60C2C4992F92F6964CA56A9D77B0022546DF
- Od5rqEA8dptWZzpj+45I+l6zshcSS2CFq30sA1xKs5g=
- ZOOM_verify_mu6aLvN2zpFAhiHvsS0rO6
- _globalsign-domain-verification=9Uv1iV5euck2_hurLL51udhAPyah_6cgF7cTk6f29I
- amazonses:R0awnXd9WJGRL3LUmniu5LSSCG0JrnuFLFoGigRereo=
- amazonses:XxG0Yq0sypOsgl/FC4eEHsjgtORb7SSMzXItPrGkQfc=
- atlassian-domain-verification=EKbaF3RykjdpqkKtRdjIh5l9bCX2xHlhivHc3yRbrKab3FJE1tUoaBunbQM/N7Ve
- atlassian-sending-domain-verification=3a96fc51-df81-4f92-9a0e-2be084d51a26
- google-site-verification=ySgscpMh9qb0mqfT0T_vr-I1c5HNbhJJzIuI4jBfO6Y
- jetbrains-domain-verification=cx5n8y8wl3o3l2opn45asiguf
- lebcGCP9rGc2eQfiYG3f22fm0S3uB/67dSJ1sJpPoKg=
- openai-domain-verification=dv-QXH23FLHD77itW2U8zX5UdUU
- SPFv=spf1 include:spf.protection.outlook.com include:datevnet._spf.datev.de include:5381506.spf06.hubspotemail.net -all
Full email verification for isr.de
Run SMTP check, SPF/DKIM/DMARC and catch-all detection.
SPF / DKIM / DMARC Get 1,000 Free Credits