MailSure

Is rcn.com a valid email domain?

Free providerChecked 2026-11-06

rcn.com has working mail routing: 1 MX record pointing, led by mx.rcn.com.

It is a free, public mailbox provider, and it is not on our disposable list.

SPF is published and ends with ~all. DMARC is set to none.

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MX records

PriorityMail serverResolves to
50mx.rcn.com129.159.122.98

SPF

Record published

v=spf1 include:_netblocks.eloqua.com ip4:207.172.4.0/24 ip4:207.172.157.0/24 ip4:208.58.56.0/24 ip4:198.183.9.0/24 ip4:146.115.106.224/27 ip4:207.172.159.1 ip4:66.235.59.86 ip4:130.250.132.170 ip4:130.250.130.230 a:mail.mutare.com a:mail.mutaresoftware.com include:_spf.rcn.syn-alias.com ~all

DMARC

Policy: none

v=DMARC1;p=none;sp=none;pct=100;rua=mailto:dmarc@eng.rcn.net;ruf=mailto:dmarc-rcn.com@eng.rcn.net

Disposable?

No, not on our disposable list.

Free provider?

Yes, a free public mailbox provider.

What this means for your email list

Is a free-provider address a problem?

No: plenty of genuine customers use rcn.com. For business-to-business sales a free address can mean a personal contact instead of a work one, so segment these separately if that matters to you. The address itself still needs checking for typos and dead mailboxes.

Sender authentication

rcn.com 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 rcn.com a valid email domain?
Yes. rcn.com publishes 1 MX record and can receive email. Whether a particular mailbox exists is a separate question that only a mailbox check can answer.
Is rcn.com a disposable email domain?
No. rcn.com is not on our disposable list, but it is a free public provider. The list is updated regularly, and new throwaway domains appear all the time.
What are the MX records for rcn.com?
mx.rcn.com (priority 50).
Does rcn.com have SPF and DMARC?
SPF: yes, ending ~all. DMARC: yes, policy none.

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