5.2.3 Message length exceeds administrative limit

The message is bigger than the server allows.

5.2.3 Message length exceeds administrative limit

Permanent: retrying will not help

The message is bigger than the server allows.

Usual causes

Large attachments or heavy embedded images.

What to do

Reduce the size, or send a link to the file instead of attaching it.

Usually the fault of: sender.

Common questions.

What does 5.2.3 mean?

The message is bigger than the server allows.

Will retrying fix 5.2.3?

No. It is a permanent failure, so retrying the same message will not help, and repeated attempts can hurt your sending reputation. Fix the cause first.

How do I fix 5.2.3?

Reduce the size, or send a link to the file instead of attaching it.

Other codes: 5.1.1 · 5.1.2 · 5.1.3 · 5.1.6 · 5.2.1 · 5.2.2 · 5.3.4 · 5.4.1 · Decode a whole bounce message

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