POP3: Illegal Mime-Type Encoding
This protocol anomaly is a message that uses encodings that are not "7bit", "8bit", or "binary" with any Content-Type that recursively includes other Content-Type fields (such as the "multipart" and "message" Content-Types).
Extended Description
Illegal Mime-type in a POP3 message represents a protocol anomaly and may represent improperly configured software or an attack attempt.
References
srx-branch-12.3
srx-19.3
srx-branch-19.3
vsrx3bsd-19.2
srx-branch-19.4
vsrx-19.4
mx-12.3
mx-19.4
vmx-19.4
mx-19.3
vsrx3bsd-19.4
srx-19.4
vsrx-12.3
vmx-19.3
vsrx-19.2
srx-12.3