Is uni-koeln.de a valid email domain?
uni-koeln.de has working mail routing: 2 MX records pointing, led by uzk-mail-in-v1.rrz.uni-koeln.de.
It is not a free provider and is not on our disposable list, so addresses here usually belong to a company, school or other organisation.
SPF is published and ends with ?all. DMARC is set to none.
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MX records
| Priority | Mail server | Resolves to |
|---|---|---|
| 5 | uzk-mail-in-v1.rrz.uni-koeln.de | 134.95.63.200, 2a00:a200:0:10::200 |
| 5 | uzk-mail-in-v2.rrz.uni-koeln.de | 134.95.63.201, 2a00:a200:0:10::201 |
SPF
Record published
v=spf1 ip4:134.95.0.0/16 ip4:109.69.68.140 ip6:2a00:a200::/48 include:agenturserver.de ?all
DMARC
Policy: none
v=DMARC1; p=none; rua=mailto:postmaster-dmarc@uni-koeln.de; ruf=mailto:postmaster-dmarc@uni-koeln.de; fo=d; adkim=r; aspf=r; pct=100; sp=none
Disposable?
No, not on our disposable list.
Free provider?
No, not a known free provider.
What this means for your email list
What this means for addresses at this domain
Mail routing for uni-koeln.de is healthy, so the domain is not the risk. The risk is the mailbox: outdated contacts, shared inboxes and catch-all servers. A mailbox-level check tells you which addresses are safe to send to.
Sender authentication
uni-koeln.de has DMARC in monitoring mode (p=none). It collects reports but does not yet block spoofed mail, so the domain is easier to impersonate.
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Sign up to get a report summary →Frequently asked questions
- Is uni-koeln.de a valid email domain?
- Yes. uni-koeln.de publishes 2 MX records and can receive email. Whether a particular mailbox exists is a separate question that only a mailbox check can answer.
- Is uni-koeln.de a disposable email domain?
- No. uni-koeln.de is not on our disposable list. The list is updated regularly, and new throwaway domains appear all the time.
- What are the MX records for uni-koeln.de?
- uzk-mail-in-v1.rrz.uni-koeln.de (priority 5); uzk-mail-in-v2.rrz.uni-koeln.de (priority 5).
- Does uni-koeln.de have SPF and DMARC?
- SPF: yes, ending ?all. DMARC: yes, policy none.