Cisco Bug: CSCun38595 - ESA accepts header lines exceeding the length defined by the RFC
Feb 26, 2019
- Cisco Email Security Appliance
Known Affected Releases
7.6.3-025 8.0.1-023 8.5.0-473
Symptom: Some messages with long headers can cause delivery issues from ESA to next hop where the message remains in the delivery queue. Conditions: Long headers exceeding the RFC2822 standard: 2.1.1. Line Length Limits There are two limits that this standard places on the number of characters in a line. Each line of characters MUST be no more than 998 characters, and SHOULD be no more than 78 characters, excluding the CRLF.
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