Bounce with 4.4.7: 'message expired, retry timeout exceeded'
4.4.7 means your server tried for days, but the recipient stayed unreachable.
support/email-aflevering/ndr-code-447steps: 4
Try this first
- Check the recipient domain's MX records
- Test whether their mail server answers on port 25 from your IP
- Often points to DNS issues or a long outage on the recipient side
- Reach out by phone, mail is currently not delivering
When to bring us in
If everything to one domain 4.4.7s, contact their IT provider directly.
See also
- Our emails land in spam for some recipientsAlmost always an SPF, DKIM, or DMARC setting that is wrong or missing, or a sender name that mimics a well-known brand.
- Someone reports receiving phishing emails "from us"Read: spoofing. Someone is abusing your sender name, not necessarily your actual mailbox.
- An email bounces (NDR): delivery failedThe NDR text usually states the exact reason. Reading it is step one.
None of the above fits?
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