Email domain · Yahoo Mail
pacbell.net email servers, SPF and DMARC
Mail for @pacbell.net goes to mx-att.mail.am0.yahoodns.net (MX priority 10), as DNS showed on 5 November 2026. These are Yahoo Mail servers. The domain publishes an SPF record ending in ~all and a DMARC policy of p=reject, which decide whether mail claiming to be from @pacbell.net is trusted.
Check one address
Five checks a minute, no account needed. Nothing is sent to the address — we ask its mail server whether the mailbox exists, then disconnect.
Checking a whole list? The first 100 addresses are free, with results to download. No card.
By continuing you agree to our Terms and Privacy Policy.
pacbell.net mail DNS on 5 November 2026
| Priority | MX host | Platform |
|---|---|---|
| 10 | mx-att.mail.am0.yahoodns.net | Yahoo Mail |
| SPF | v=spf1 include:_ipspf.yahoo.com ~all |
|---|---|
| DMARC | v=DMARC1; p=reject; fo=1; rua=mailto:[email protected]; ruf=mailto:[email protected] |
| 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.
pacbell.net MX records
pacbell.net publishes a single MX host, mx-att.mail.am0.yahoodns.net. 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.
45 other domains we checked on the same day also hand their mail to Yahoo Mail servers, with different records from pacbell.net: aol.at, aol.be, aol.ch, aol.com.au, aol.com.br, aol.com.mx, aol.de, aol.es and 37 more.
pacbell.net SPF record
The record on 5 November 2026 was v=spf1 include:_ipspf.yahoo.com ~all.
In plain terms, it delegates to _ipspf.yahoo.com. The top level uses 1 DNS-querying term; 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.
pacbell.net DMARC policy
The record is v=DMARC1; p=reject; fo=1; rua=mailto:[email protected]; ruf=mailto:[email protected].
p=reject asks receivers to refuse mail that fails DMARC.
Aggregate reports go to emaildefense.proofpoint.com, so the domain's owner sees who sends mail as @pacbell.net.
What that means for you: if a contact gives an @pacbell.net address and you send to them, nothing changes. But never put an @pacbell.net address in the From line of mail sent through your own tool or ESP. It can't pass DMARC for pacbell.net, and this policy tells receivers to refuse it.
Domains on the same mail servers as pacbell.net
6 other domains published exactly the same MX hosts and SPF record as pacbell.net on 5 November 2026: ameritech.net, flash.net, nvbell.net, prodigy.net, snet.net and swbell.net. Mail to any of them lands on the same servers.
pacbell.net shares mx-att.mail.am0.yahoodns.net with att.net. When we tested those servers for att.net on 12 October 2026, the result was: Not verifiable. The server accepts any recipient, real or not.
pacbell.net shares mx-att.mail.am0.yahoodns.net with sbcglobal.net. When we tested those servers for sbcglobal.net on 12 October 2026, the result was: Not verifiable. The server accepts any recipient, real or not.
Can you verify @pacbell.net addresses?
Our checker treats @pacbell.net 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 @pacbell.net itself, but its mail goes to the same servers as att.net, so expect @pacbell.net 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.
What Yahoo Mail documents for senders
- Yahoo asks every sender to authenticate with SPF and DKIM, and bulk senders to publish DMARC, offer one-click unsubscribe and keep spam complaints low. Yahoo Sender Hub: best practices
- Yahoo publishes the meaning of its own SMTP replies, including the deferrals it uses to slow unfamiliar senders. Yahoo Sender Hub: SMTP error codes
Common questions
- What are the MX records for pacbell.net?
- On 5 November 2026:
mx-att.mail.am0.yahoodns.net(priority 10). - Does pacbell.net have SPF and DMARC?
- On 5 November 2026
pacbell.netpublished an SPF record ending in~alland a DMARC policy ofp=reject. - Is pacbell.net a disposable email domain?
- No.
pacbell.netis not on the disposable domain list our checker uses, so @pacbell.net addresses are checked like any other mailbox. See the disposable domain checker for the list. - Is pacbell.net the same mail system as ameritech.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 @pacbell.net lists
- Bulk email checker for a pasted list or CSV
- Verify a whole file with a reason for every row
- Yahoo address checker
- 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 @pacbell.net addresses?
Sign in with Google and the first 100 addresses are checked free: valid, risky and invalid, with the reason for each row and a file to download. No card. After that, plans start at $9/mo for 2,500 emails a month.
By continuing you agree to our Terms and Privacy Policy.