Email domain
uolsinectis.com.ar email servers, SPF and DMARC
Mail for @uolsinectis.com.ar goes to proxymail1.sion.com (MX priority 50), as DNS showed on 5 November 2026. The host sits under sion.com. The domain publishes an SPF record ending in ~all and no DMARC record, which decide whether mail claiming to be from @uolsinectis.com.ar is trusted.
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uolsinectis.com.ar mail DNS on 5 November 2026
| Priority | MX host | Platform |
|---|---|---|
| 50 | proxymail1.sion.com | Not identified |
| SPF | v=spf1 a mx ptr a:smtp3.sion.com a:antispam.sion.com a:correosion.sion.com mx:proxymail1.sion.com ip4:200.69.32.0/24 ip4:200.69.44.0/22 ip4:216.244.192.0/24 ip4:200.81.186.132/27 ip4:200.59.123.0/24 ip4:200.59.119.0/24 ip4:200.69.36.0/24 ~all |
|---|---|
| DMARC | None published |
| MTA-STS | None published |
| TLS reporting | None published |
Read on 5 November 2026 with dig against 1.1.1.1 (8.8.8.8 as fallback); nothing sent to the mail servers. Check the records today with the email provider lookup.
uolsinectis.com.ar MX records
uolsinectis.com.ar publishes a single MX host, proxymail1.sion.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.
uolsinectis.com.ar SPF record
The record on 5 November 2026 was v=spf1 a mx ptr a:smtp3.sion.com a:antispam.sion.com a:correosion.sion.com mx:proxymail1.sion.com ip4:200.69.32.0/24 ip4:200.69.44.0/22 ip4:216.244.192.0/24 ip4:200.81.186.132/27 ip4:200.59.123.0/24 ip4:200.59.119.0/24 ip4:200.69.36.0/24 ~all.
In plain terms, lists 7 IP ranges directly. The top level uses 7 DNS-querying terms; SPF allows 10 in total including nested includes (RFC 7208 §4.6.4).
It ends in a soft fail (~all): mail from unlisted servers should be accepted but treated as suspicious.
uolsinectis.com.ar DMARC policy
_dmarc.uolsinectis.com.ar returned no DMARC record on 5 November 2026. Receivers therefore get no instruction about mail that fails SPF and DKIM, which makes @uolsinectis.com.ar easier to spoof (RFC 7489).
Can you verify @uolsinectis.com.ar addresses?
Our checker treats @uolsinectis.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 proxymail1.sion.com answers for @uolsinectis.com.ar, so we make no claim here about whether single mailboxes can be confirmed; each result carries its own reason.
Cleaning a list with these addresses
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.
Common questions
- What are the MX records for uolsinectis.com.ar?
- On 5 November 2026:
proxymail1.sion.com(priority 50). - Does uolsinectis.com.ar have SPF and DMARC?
- On 5 November 2026
uolsinectis.com.arpublished an SPF record ending in~alland no DMARC record. - Is uolsinectis.com.ar a disposable email domain?
- No.
uolsinectis.com.aris not on the disposable domain list our checker uses, so @uolsinectis.com.ar addresses are checked like any other mailbox. See the disposable domain checker for the list.
Free checks for @uolsinectis.com.ar lists
- Bulk email checker for a pasted list or CSV
- Verify a whole file with a reason for every row
- SPF lookup counter
- MTA-STS checker
- Disposable email checker
Another domain? See every email domain we have mapped and what our checker does at each mailbox provider.
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