SRX Syslogging to TCP

Is there a way to send syslogs over TCP instead of UDP.

I have the following configured but its not working

show configuration system syslog
archive size 100k files 3;
user * {
    any emergency;
}
host 1.1.1.1 {
    port 514;
}
file messages {
    any critical;
    authorization info;
}
file interactive-commands {
    interactive-commands error;
}

show configuration security log
utc-timestamp;
mode stream;
format sd-syslog;
report;
source-address 4.4.4.4;
transport {
    protocol tcp;
}
stream External {
    category all;
    host {
        1.1.1.1;
        port 514;
    }
}

The syslog setup is all fine and working nicely on TCP as it currently handles other devices sending syslog over TCP to it.