By default Syslog is limited to a message size of 1024 bytes in DLP 14.6 and later.
For older Linux, such as RHEL/CentOS 5.x, syslog service has a hard-coded buffer of 1024 bytes. Messages are truncated when size>1024 bytes.
For newer Linux, such as RHEL/CentOS 6.x and above, the max message size of syslog is configurable, with default to 2kb or 8 kb. The actual syslog service is replaced by "rsyslog" (e.g. in CentOS) or "syslog-ng".
edit /etc/rsyslog.conf to set $MaxMessageSize and enable UDP listener, e.g. # Set max log message size in bytes. NOTE: it must be the 1st config line $MaxMessageSize 4k # Provide UDP syslog reception $ModLoad imudp $UDPServerRun 514