[exim] Message ID

Hi all,

I'd like to know how message ID is generated by exim.

Ex: 1DeJiO-0008B7-Oh

I will mount a load balanced system with 4 exim servers with identical users and configurations and storing all messagens in same storage. Another machine will distribute requests based on load average of the server.

Are there any possibility to a server generate the exact same ID than the another server an store duplicated Id's on storage? Can this problem occur?


regards,

Paulo