Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
rtm.at
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-21 09:14:59 UTC · ↺ Refresh
MX Hostnames
- rtm-at.mail.protection.outlook.com
MX Priorities
- rtm-at.mail.protection.outlook.com: 10
A / AAAA Records
- 212.183.10.40 (no PTR)
Mail Server IPs
- 52.101.73.22 ↩ mail-am7pr05cu00106.inbound.protection.outlook.com
- 52.101.68.39 ↩ mail-db7pr03cu00607.inbound.protection.outlook.com
- 52.101.68.27 ↩ mail-db7pr03cu00503.inbound.protection.outlook.com
- 52.101.73.1 ↩ mail-am3pr04cu00501.inbound.protection.outlook.com
- 2a01:111:f403:ca04::a ↩ mail-du0pr03cu00102.inbound.protection.outlook.com
- 2a01:111:f403:ca04::10 ↩ mail-dbapr03cu00100.inbound.protection.outlook.com
- 2a01:111:f403:ca04::5 ↩ mail-db3pr0202cu00205.inbound.protection.outlook.com
- 2a01:111:f403:ca09::4 ↩ mail-am0pr04cu00504.inbound.protection.outlook.com
SOA Record
Raw SOA
dns1.grz.at hostmaster.grz.at 2017083009 1800 600 1209600 1800
Primary NS (mname)
dns1.grz.at
Admin Email (rname)
hostmaster@grz.at
Serial
2017083009
Refresh
1800s
Retry
600s
Expire
1209600s
Minimum TTL
1800s
Nameservers (NS)
dns1.grz.at
dns2.grz.at
dns4.grz.at
dns3.grz.at
SPF Record
✓ Strict (-all)
v=spf1 include:_spf.rtm.at include:spf.grz.co.at -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1;p=none;rua=mailto:[email protected]
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
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
3 records- SPFv=spf1 include:_spf.rtm.at include:spf.grz.co.at -all
- MS=99EE7EEF0D960E53FDDCC0304ACFB9B374B1EF0D
- MS=ms85878142
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