You're right, Postfix is still passing the two CC recipients in one LMTP process. I didn't find how to force Postfix to send emails one by one… Still digging… Anyway, I believe the way Dovecot is handling this case is not the right way.
Le Mon May 26 10:48:32 2014, Axel Luttgens a écrit :
Le 26 mai 2014 à 10:01, Stanislas SABATIER a écrit :
To extend my previous message :
I added the option '-o lmtp_destination_recipient_limit=1' to Postfix and try again to send a message to someone outside my domains, but adding two people in CC. It seems that Dovecot is still handling the delivery incorrectly. Here is the transcript of what happened :
[...]
Hello Stanislas,
Still busy with your previous message, but I fear the above hasn't been concluding, as if the '-o lmtp_destination_recipient_limit=1' hadn't been taken into account: one lmtp process, same message id (sjhnApTvglPpuQAAz9GZsw).
So, it looks like you still had a single message with two recipients.
Axel