On 10/2/2017 11:47 AM, Noel Jones wrote:
Yes, for sure. Extra recipients will get a 4xx response.
Note this may*severely* delay deliveries, depending on the sender's
retry policy. If a message arrives with 100 recipients, the sender
will need to retry 99 times, which will likely take a very long time.
Agreed about the delay. I accept once and reinject internally with a
milter so there is no delay and 1 email with 100 recipients becomes 100
emails. But it's nice to know this option exists because it might be
helpful for store and queue internal purposes. Thanks for pointing it out!
Regards,
KAM