MailSure

Is uni-bonn.de a valid email domain?

Organisation domainChecked 2026-11-06

uni-bonn.de can receive email. It publishes 3 mail servers, and the first choice is esa1.rhrz.uni-bonn.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. DMARC is set to none.

Check an email address at uni-bonn.de

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MX records

PriorityMail serverResolves to
10esa1.rhrz.uni-bonn.de131.220.18.241, 2a00:5ba0:0:102c::a
10esa3.rhrz.uni-bonn.de131.220.18.243, 2a00:5ba0:0:102e::c
10esa2.rhrz.uni-bonn.de131.220.18.242, 2a00:5ba0:0:102d::b

SPF

Record published

v=spf1 redirect=_spf.uni-bonn.de

DMARC

Policy: none

v=DMARC1; p=none; sp=none; adkim=s; aspf=s; rua=mailto:dmarc@uni-bonn.de

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

uni-bonn.de looks like an organisation's own domain. Those are usually good leads, and also where bounces come from: people change jobs and mailboxes get closed. Checking each address, including whether the server accepts any recipient, avoids damaging your sender reputation.

Sender authentication

uni-bonn.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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Frequently asked questions

Is uni-bonn.de a valid email domain?
Yes. uni-bonn.de publishes 3 MX records and can receive email. Whether a particular mailbox exists is a separate question that only a mailbox check can answer.
Is uni-bonn.de a disposable email domain?
No. uni-bonn.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-bonn.de?
esa1.rhrz.uni-bonn.de (priority 10); esa3.rhrz.uni-bonn.de (priority 10); esa2.rhrz.uni-bonn.de (priority 10).
Does uni-bonn.de have SPF and DMARC?
SPF: yes. DMARC: yes, policy none.

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