## Description

When the Microsoft SMTP service attempts to send a message to a server and receives a 4xx error code, it quickly and repeatedly attempts to redeliver the message, causing a denial of service.

## Severity

Overall Severity: N/A

### CVSS Metrics

Type | Score | Severity | Vector
--- | --- | --- | ---

## Affected Products

No affected products specified

## References

- https://exchange.xforce.ibmcloud.com/vulnerabilities/CVE-1999-0419
- https://exchange.xforce.ibmcloud.com/vulnerabilities/CVE-1999-0419

Neural Processor Active