t-online.de
Detected Mail Infrastructure: Consumer Email Service Provider
Primary: mx01.t-online.de
Enforces domain sender policy
MailVeri Intelligence Assessment for t-online.de
Verify an email address at t-online.de
Test if a specific recipient mailbox exists and can receive messages without sending any actual email.
Need to clean email lists containing @t-online.de?
DNS checks confirm mail server availability, but cannot detect full inboxes, deleted mailboxes, or stealth spam traps. MailVeri confirms each mailbox can receive mail before you send with 99% accuracy, so you keep bounce rates under 2% and protect your sender reputation.
Mail Exchanger (MX) Records
Active inbound mail routes resolved from authoritative DNS:
SPF & DMARC Authentication
Sender Policy Framework (SPF):
Domain-based Message Authentication (DMARC):
Frequently Asked Questions about t-online.de
Q Is t-online.de a disposable email domain?
No. t-online.de is a standard free email domain powered by Consumer Email Service Provider. It is not an ephemeral or disposable burner service.
Q What mail servers (MX records) handle email for t-online.de?
Emails addressed to @t-online.de are processed by 4 authoritative mail exchanger(s), including mx01.t-online.de (priority 10), mx00.t-online.de (priority 10), mx02.t-online.de (priority 10). The mail routing is handled by Consumer Email Service Provider.
Q Does t-online.de have SPF and DMARC email security configured?
Yes. t-online.de has published email authentication records. An SPF record is active (v=spf1 ip4:194.25.134.16/28 ip4:194.25.134.80/28 ~all) and a DMARC policy is in place (v=DMARC1; p=none; rua=mailto:[email protected]), protecting the domain against sender address spoofing.
Q Should signups using @t-online.de be allowed or blocked?
Signups using @t-online.de are legitimate consumer email accounts (Consumer Email Service Provider). Accept signups while validating syntax and mailbox status via MailVeri API.
Q How do I verify if an email address on t-online.de exists without sending?
You can verify recipient mailboxes on t-online.de in real time using the MailVeri API. It confirms the domain accepts mail, whether the mailbox exists, and catch-all status without sending any email, with 99% accuracy, so you keep bounce rates under 2% and protect your sender reputation.