[syslog-ng] Message length

Hi! Using logger command, I'm trying to send long messages to syslog-ng. I'm aware that messages cannot be too long (UDP limitation). The problem is that logger doesn't just cut my log, it also remove some part of the log replacing it with the syslog header. Needless to say, this information is crucial to me. Is there a way to change this or must I change my log generation creating shorter logs ? Thanks. G.