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SMTP error code · Yahoo / AOL

Yahoo 554 delivery error: this user doesn't have a yahoo.com account

554 Permanent failure (5xx): the message bounced
By iBlockSpam Team Checked against sources 2 sources How we check our content
What it means

The Yahoo address you sent to doesn't exist. Yahoo says the message will never be delivered, so don't retry and remove the address from your lists.

What the bounce says
554 delivery error: dd This user doesn't have a yahoo.com account (testing123@yahoo.com) [-5] - mta123.mail.mud.yahoo.com

From the sample failure notice on Yahoo's Sender Hub.

What 554 means

Yahoo's Sender Hub shows this line in its sample failed-delivery message. It's Yahoo's "recipient does not exist" error: the Yahoo account you're trying to reach doesn't exist.

Yahoo's advice is direct. Contact the recipient another way to confirm their correct address. Don't retry delivery: it will never complete successfully. And remove the address from your mailing list. Yahoo Help adds that the most common reason for a failed delivery is that the address isn't valid, and that a single misplaced letter can be enough; if mail keeps bouncing, the account may have been closed or moved.

For senders of regular or bulk mail, removing these addresses quickly matters. Yahoo lists "excessive unknown recipients" among its reasons for blocking mail, and says list managers should have a policy for removing addresses that generate 5xx bounces.

Likely causes

  • A typo in the Yahoo address.
  • The Yahoo account was closed or never existed.
  • An old address still on a mailing list.

How to fix it

If you sent the message

  1. Check the spelling and confirm the address with the person another way.
  2. Don't retry the same address.
  3. Remove the address from mailing lists, and remove 5xx bounces automatically.

If you're the recipient or their admin

  1. If it's your address, check you're giving people the right spelling and that your account is still active.
MX Lookup Email Health Check

Frequently asked questions

Should I retry a Yahoo 'doesn't have a yahoo.com account' bounce?

No. Yahoo says delivery will never complete successfully and that you should remove the address from your mailing list.

Can too many of these bounces hurt my delivery to Yahoo?

Yes. Yahoo lists excessive unknown recipients as a reason it may block mail, so remove bad addresses promptly.

Sources

  1. SMTP Error Codes (Yahoo Sender Hub)
  2. Email "Failed Delivery" message (Yahoo Help)

Provider messages are quoted as the provider publishes them. Servers can change their wording, so the bounce you received may differ slightly.

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