Email domain
tiscali.co.uk email servers, SPF and DMARC
Mail for @tiscali.co.uk goes to mx001.tt.xion.oxcs.net (MX priority 10) and 3 backup hosts, as DNS showed on 5 November 2026. The host sits under oxcs.net. The domain publishes an SPF record ending in ~all and a DMARC policy of p=reject, which decide whether mail claiming to be from @tiscali.co.uk is trusted.
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tiscali.co.uk mail DNS on 5 November 2026
| Priority | MX host | Platform |
|---|---|---|
| 10 | mx001.tt.xion.oxcs.net | Not identified |
| 10 | mx002.tt.xion.oxcs.net | Not identified |
| 10 | mx003.tt.xion.oxcs.net | Not identified |
| 10 | mx004.tt.xion.oxcs.net | Not identified |
| SPF | v=spf1 a mx include:spf.shared.xion.oxcs.net include:_spf.talktalk.net ~all |
|---|---|
| DMARC | v=DMARC1; p=reject; pct=100; fo=1; ri=3600; rua=mailto:[email protected],mailto:[email protected]; ruf=mailto:[email protected],mailto:[email protected]; |
| MTA-STS | v=STSv1; id=1731317762718 |
| TLS reporting | v=TLSRPTv1; rua=mailto:[email protected]; |
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.
tiscali.co.uk MX records
tiscali.co.uk publishes 4 MX hosts, all at priority 10, so senders spread mail across them.
tiscali.co.uk SPF record
The record on 5 November 2026 was v=spf1 a mx include:spf.shared.xion.oxcs.net include:_spf.talktalk.net ~all.
In plain terms, it delegates to spf.shared.xion.oxcs.net and _spf.talktalk.net. The top level uses 4 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.
tiscali.co.uk DMARC policy
The record is v=DMARC1; p=reject; pct=100; fo=1; ri=3600; rua=mailto:[email protected],mailto:[email protected]; ruf=mailto:[email protected],mailto:[email protected];.
p=reject asks receivers to refuse mail that fails DMARC.
Aggregate reports go to inbox.ondmarc.com and open-xchange.com, so the domain's owner sees who sends mail as @tiscali.co.uk.
What that means for you: if a contact gives an @tiscali.co.uk address and you send to them, nothing changes. But never put an @tiscali.co.uk address in the From line of mail sent through your own tool or ESP. It can't pass DMARC for tiscali.co.uk, and this policy tells receivers to refuse it.
tiscali.co.uk TLS policy
_mta-sts.tiscali.co.uk publishes v=STSv1; id=1731317762718, so tiscali.co.uk uses MTA-STS: sending servers that support it must deliver over verified TLS or not at all (RFC 8461).
It also asks for TLS reports with v=TLSRPTv1; rua=mailto:[email protected]; (RFC 8460).
Domains on the same mail servers as tiscali.co.uk
3 other domains published exactly the same MX hosts and SPF record as tiscali.co.uk on 5 November 2026: lineone.net, dsl.pipex.com and onetel.com. Mail to any of them lands on the same servers.
tiscali.co.uk shares mx001.tt.xion.oxcs.net, mx002.tt.xion.oxcs.net, mx003.tt.xion.oxcs.net and mx004.tt.xion.oxcs.net with talktalk.net. When we tested those servers for talktalk.net on 23 October 2026, the result was: Hard to verify. The server refuses connections it does not trust before answering about the mailbox.
Can you verify @tiscali.co.uk addresses?
Our checker treats @tiscali.co.uk 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 tested @tiscali.co.uk itself, but its mail goes to the same servers as talktalk.net, so expect @tiscali.co.uk results to follow the pattern described there. 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 tiscali.co.uk?
- On 5 November 2026:
mx001.tt.xion.oxcs.net(priority 10),mx002.tt.xion.oxcs.net(priority 10),mx003.tt.xion.oxcs.net(priority 10),mx004.tt.xion.oxcs.net(priority 10). - Does tiscali.co.uk have SPF and DMARC?
- On 5 November 2026
tiscali.co.ukpublished an SPF record ending in~alland a DMARC policy ofp=reject. - Is tiscali.co.uk a disposable email domain?
- No.
tiscali.co.ukis not on the disposable domain list our checker uses, so @tiscali.co.uk addresses are checked like any other mailbox. See the disposable domain checker for the list. - Is tiscali.co.uk the same mail system as lineone.net?
- Its DNS says so: on 5 November 2026 both published the same MX hosts and SPF record, so mail to either lands on the same servers.
Free checks for @tiscali.co.uk 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.
Got a list with @tiscali.co.uk addresses?
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