Invoice #4412

billing@example.com → ada@example.net deferred

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Message

Domainexample.com
Applicationbilling
Accepted2026-08-15 20:14:02 UTC
Status reported2026-08-15 20:14:08 UTC
Queue id4C3A1E2F1A
Journal id1842

History

  1. 2026-08-15 20:14:02 UTC

    accepted Received by the relay

    SASL login billing, queued as 4C3A1E2F1A.

  2. 2026-08-15 20:14:08 UTC

    deferred Receiving MX asked to try later

    Postfix retries: first after 5 minutes, then with increasing gaps up to 1 hour 7 minutes, for up to 5 days. There is no fixed attempt count — a deferred message stays in the queue until it is delivered or that lifetime runs out.

  3. not yet

    delivery Waiting on the next retry

Delivery log

TimeMessage
20:14:02postfix/smtpd[221]: 4C3A1E2F1A: client=203.0.113.40, sasl_username=billing
20:14:02postfix/cleanup[224]: 4C3A1E2F1A: message-id=<4412@example.com>
20:14:08postfix/smtp[230]: 4C3A1E2F1A: to=<ada@example.net>, relay=mx.example.net[198.51.100.20]:25, delay=6, status=deferred (450 4.2.1 mailbox busy)

20:14:08

status=deferred (450 4.2.1 mailbox busy)

20:14:02

client=203.0.113.40, sasl_username=billing