4.4.7 Delivery time expired

The mail system kept trying but the message was still undelivered when its time ran out, so it gave up.

4.4.7 Delivery time expired

Temporary: it may work if you retry

The mail system kept trying but the message was still undelivered when its time ran out, so it gave up.

Usual causes

The recipient’s server stayed unreachable or kept refusing temporarily for the whole retry period (often several days).

What to do

Try sending again, and check the recipient’s address and domain.
Look at the earlier temporary failures in the message history. They explain why it never got through.

Usually the fault of: receiving server.

Common questions.

What does 4.4.7 mean?

The mail system kept trying but the message was still undelivered when its time ran out, so it gave up.

Will retrying fix 4.4.7?

Often yes. It is a temporary failure, and mail systems retry for you. If it keeps failing for days, look at the causes listed above.

How do I fix 4.4.7?

Try sending again, and check the recipient’s address and domain. Look at the earlier temporary failures in the message history. They explain why it never got through.

Other codes: 5.1.1 · 5.1.2 · 5.1.3 · 5.1.6 · 5.2.1 · 5.2.2 · 5.2.3 · 5.3.4 · Decode a whole bounce message

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