I run pflogsum to get statistics from e-mail server. Usually the number of received and delivered messages are very close. Yesterday received was 711 and delivered 3348. I looked at mail.log, and my guess is when sent e-mail contains many addresses in the to: field, it is one message received but many delivered. If my quess is correct, sending an e-mail with 10 addresses in TO: would count as 1 received and 10 delivered. Is my guess correct?