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5.x.x permanent failure

SMTP Error Code 552: Meaning, Causes and How to Fix It

SMTP 552 is a permanent failure.

The message was rejected for exceeding a size or storage limit, either the recipient's mailbox allowance or a maximum message size set by the receiver.

Class
5xx permanent
Bounce type
Hard bounce
Highest severity
Critical
Responses on record
12

SMTP 552 responses from email providers

How mailbox providers phrase a 552. Open a provider for the full text, severity and fix for every variation.

SMTP 552 questions

›Is SMTP 552 a hard bounce or a soft bounce?

It is a permanent failure, so a hard bounce. The receiving server will not accept the same message on a retry, and the address or the sending problem has to be fixed before you resend.

›What causes an SMTP 552 error?

The message was rejected for exceeding a size or storage limit, either the recipient's mailbox allowance or a maximum message size set by the receiver. The exact reason varies by receiver, which is why this page lists the specific 552 responses recorded for Apple, Comcast, Free, GMX, Google, Orange.

›How do I fix an SMTP 552 bounce?

Read the enhanced status code and the message text, not just the number. Wording that names the recipient (user unknown, mailbox unavailable) means correct or remove the address. Wording that names authentication or reputation (SPF, DKIM, DMARC, blocklist) means fix that on the sending side, or clear the listing. Every response on this page has its own guidance.

Other SMTP error codes