At 4PM -0500 on 29/07/13 you (Stan Hoeppner) wrote:
On 7/29/2013 2:30 AM, Jan Behrend wrote:
You cannot use the LDA method if SMTP and IMAP services reside on different machines, which would be the case in larger scale mail system setups.
Which brings up an interesting point. With a single LMTP daemon on the Dovecot server communicating via a single socket with the upstream MTA over the wire, it would stand to reason that message throughput rate may be limited by serialization in the LMTP request/reply chain. There is no parallelism, and thus there is relatively high latency.
What makes you think an SMTP server delivering over LMTP only makes a single connection to the LMTP server? I believe Postfix by default makes a fresh connection for each delivery.
Ben