554 Malformed Email Rejected, Help With Emails Being Returned

A 554 email error is sometimes thought of as a catch-all of email errors. It is generally used when there is a generic delivery failure that another email error code doesn’t directly define a problem for.

Đang xem: 554 malformed email rejected

Some mail servers also use a 554 error even if there is a specific error code that defines what went wrong already.

You should receive a bounce-back message from the server with a variation of email error 554 in the subject, and the body should contain your original message that you attempted to deliver.

Example bounce-back message

Return-path: Envelope-to: Delivery-date: Sat, 13 Oct 2012 04:40:30 -0700Received: from mailnull by with local (Exim 4.77)id 1TN050-0007it-Dwfor ; Sat, 13 Oct 2012 04:40:30 -0700X-Failed-Recipients: Auto-Submitted: auto-repliedFrom: Mail Delivery System To: Subject: Mail delivery failed: returning message to senderMessage-Id: Date: Sat, 13 Oct 2012 04:40:30 -0700

A message that you sent could not be delivered to one or more of itsrecipients. This is a permanent error. The following address(es) failed:
SMTP error from remote mail server after RCPT TO:>:host <>: 554 Invalid recipient
>Received: from Admin by with local (Exim 4.77)(envelope-from >)id 1TN04y-0007iG-6dfor ; Sat, 13 Oct 2012 04:40:28 -0700To: Recipient >X-Autorespond: CommentsMIME-Version: 1.0X-Loop: Recipient group >Precedence: auto_replyX-Precedence: auto_replyFrom: “sender” >Subject: Auto Reply: Out of OfficeDate: Sat, 13 Oct 2012 04:40:28 -0700

Common variations of the 554 email error

554 5.7.0 Message Size Violation554 5.7.1 Message blocked due to spam content in the message554 5.7.1 Message blocked due to spam content in the message.

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554 5.7.1 : Relay access denied554 RLY:B1554 delivery error: dd This user doesn’t have a account554 Denied (Mode: normal)554 Invalid recipient554 Malformed mail denied!554 Message is not RFC compliant; missing “Date” header554 Message not allowed – Email not accepted for policy reasons. Please visit <120>554 Message permanently rejected554 Message refused554 no valid recipients, bye554 rejected due to spam content554 rejected due to virus554 : Relay access denied554 Sorry, no mailbox here by that name.554 Spam detected554 Spam violation, the content of your e-mail contains illegal characters, re-sent after examination554 Transaction Failed Spam Message not queued.554 Virus found, message permanently rejected (#5.3.0)

Resolving a 554 email error bounceback

Because errors in the 554 series don’t always bounceback for a common reason, they could be either a hard or soft bounce. To better understand soft and hard bounces, and general email bounceback errors you can read why does email bounce, bounceback, or error?

In our example bounce-back error above the reason the message has failed is because an auto-reply was trying to be sent to an account that didn’t exist. So the mail server responded back with a 554 Invalid recipient error.

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Stormy is a Content Marketing Writer at InMotion Hosting. Her content focus is WordPress, web design, and help articles for small businesses.

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