Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
redvillecrm.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-29 13:57:35 UTC · ↺ Refresh
MX Hostnames
- redvillecrm-de.mail.protection.outlook.com
MX Priorities
- redvillecrm-de.mail.protection.outlook.com: 0
A / AAAA Records
- 217.160.0.56 ↩ 217-160-0-56.elastic-ssl.ui-r.com
- 2001:8d8:100f:f000::27d ↩ 2001-08d8-100f-f000-0000-0000-0000-027d.elastic-ssl.ui-r.com
Mail Server IPs
- 52.101.170.0 ↩ mail-fr5p281cu00500.inbound.protection.outlook.com
- 52.101.170.1 ↩ mail-fr4p281cu03101.inbound.protection.outlook.com
- 52.101.170.2 ↩ mail-fr6p281cu00202.inbound.protection.outlook.com
- 52.101.168.0 ↩ mail-beup281cu00100.inbound.protection.outlook.com
- 2a01:111:f403:ca2d::2 ↩ mail-fr6p281cu00202.inbound.protection.outlook.com
- 2a01:111:f403:ca27:: ↩ mail-beup281cu00100.inbound.protection.outlook.com
- 2a01:111:f403:ca2d:: ↩ mail-fr5p281cu00500.inbound.protection.outlook.com
- 2a01:111:f403:ca2d::1 ↩ mail-fr4p281cu03101.inbound.protection.outlook.com
SOA Record
Raw SOA
ns1021.ui-dns.biz hostmaster.1und1.com 2017060135 28800 7200 604800 600
Primary NS (mname)
ns1021.ui-dns.biz
Admin Email (rname)
hostmaster@1und1.com
Serial
2017060135
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
600s
Nameservers (NS)
ns1113.ui-dns.de
ns1021.ui-dns.biz
ns1019.ui-dns.com
ns1052.ui-dns.org
SPF Record
✓ Soft Fail (~all)
v=spf1 include:spf.protection.outlook.com ~all
📊 DNS lookups: 1/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✗ p=none
v=DMARC1;p=none;pct=100;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
✓ DKIM properly configured for selector: selector1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
10 records- d365mktkey=0fAHFIaBvXeWux8t4EnxIkRW1xBL6eCbVnmB9tUJDhIx
- d365mktkey=18MxGdH0lroBJlp4AaknThmhoQnN0GgRQMC9ncW2lO4x
- d365mktkey=S8GseSVVf5matfZU4NcCqVKuJTxk4mx8NM0Md1YT7jAx
- SPFv=spf1 include:spf.protection.outlook.com ~all
- msfpkey=1izprd9dvuctn3inv3242jfdm
- d365mktkey=cDcTWgh3XBJbNxWNiqdxdc9rq2dH8RqQ6Fonyk4xmxsx
- d365mktkey=Aav76491rL77bsc7bWPQx4yd5CXtYx414rwzBU64AzMx
- d365mktkey=C6hPqTQr6DxWPx7x41c0MquQVYhEc6m4svueX2paEPMx
- d365mktkey=PxUfEadNwFERessb5v3KFIsMFCsmvxeCQrAdqEVKnNYx
- MS=3C0957CBE035062C545B4845F71F5666DB365A25
Free · No signup required
Add email validation to your forms
Block disposable emails, validate MX records, detect role accounts — unlimited, forever free.
<script src="https://check.verifyswift.com/"></script>
One line of code · Works on any site
See demo & docs
Deep verification
Full email verification for redvillecrm.de
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits