speedy.com.ar email servers, SPF and DMARC

speedy.com.ar publishes a single MX host, ar.vmx.terra.com. With no backup host, a sender that can't reach it queues the message and retries until the server answers or the queue gives up.

The record on 5 November 2026 was v=spf1 ip4:200.70.35.231 ip4:200.63.160.43 ip4:200.63.160.30 ip4:200.110.133.18 ip4:200.63.129.139 mx a:vsmtp.terra.com a:relay-speedy.infovia.com.ar include:terra.com include:telesupervision.speedy.com.ar.

In plain terms, it delegates to terra.com and telesupervision.speedy.com.ar and lists 5 IP ranges directly. The top level uses 5 DNS-querying terms; SPF allows 10 in total including nested includes (RFC 7208 §4.6.4).

_dmarc.speedy.com.ar returned no DMARC record on 5 November 2026. Receivers therefore get no instruction about mail that fails SPF and DKIM, which makes @speedy.com.ar easier to spoof (RFC 7489).

Our checker treats @speedy.com.ar like any domain: syntax, MX, disposable and role checks first, then a made-up address to rule out a catch-all, then your address at RCPT TO, disconnecting without sending. We have not published a test of how ar.vmx.terra.com answers for @speedy.com.ar, so we make no claim here about whether single mailboxes can be confirmed; each result carries its own reason.

DNS tells you where mail goes, not whether one person's mailbox still exists. For a list, run the whole file through a verifier before you send: invalid rows come out, risky rows (catch-all, unknown, refused) go in their own segment, and valid rows are safe to mail.