I just took a trace and confiimed that you are correct. We used to have many problems with looping deliveries of large messages with an SMTP-only MTA before we upgraded to IMail. I saw a reduction in delivery bandwidth because IMail looks at the overall largest message from the HELO response and cuts off many deliveries early.
As you note, it doesn't do the finer grained message size delivery control for individual messages - this leads to some messages being transmitted up to the size limit for the individual account before the transmission is dropped. ----- Original Message ----- > > IMail speaks ESMTP so there should never be a delivery attempt on a > > large message where an ESMTP receiver needs to drop the connection > > after it receives a certain size. > > IMail speaks EMSTP sometimes, but does not implement the extended MAIL > command from RFC 1870, so this is unfortunately not true. To Unsubscribe: http://www.ipswitch.com/support/mailing-lists.html List Archive: http://www.mail-archive.com/imail_forum%40list.ipswitch.com/ Knowledge Base/FAQ: http://www.ipswitch.com/support/IMail/
