> You're splitting theoretical hairs, there is no practical penalty > writing to port 25, with a huge gain in portability and stability.
In a benchmark I just performed, queue injection (direct disk writes and SMTP32 invocation) outperformed SMTP submission using Dundas' COM component by nearly 3:1 for 1000 local messages. That's a significant real-world penalty, if you ask me, especially since most queue injection applications are only called for to send out large numbers of messages. FURTHERMORE, pure SMTP sending tripped over itself, requeueing 150 of the messages due to process overrun, while queue injection completed without errors. > The RFC SMTP protocol will always be more stable and therefore more > trustable as a programming interface than a proprietary, > undocumented, unsupported interface. Not for batch or interactive submission. This is why Web Messaging and Lists don't submit their messages using SMTP!!! SMTP submission: SMTPD32 --> Disk --> SMTP32 Queue injection: Disk --> SMTP32 There's nothing new, unstable, or any more proprietary with queue injection. -Sandy Please visit http://www.ipswitch.com/support/mailing-lists.html to be removed from this list. An Archive of this list is available at: http://www.mail-archive.com/imail_forum%40list.ipswitch.com/ Please visit the Knowledge Base for answers to frequently asked questions: http://www.ipswitch.com/support/IMail/
