1. Is there a way to increase the speed with which imail processes mail?
What are you looking to change?
Are E-mails taking a long time to be processed (from the time you hit "send" in your mail client until the time they are delivered, typically within couple of minutes)? If so, you'll need to find out where the delay is by checking log files.
Or are the E-mails not being delivered on the first attempt, which would cause longer delays? This could occur if there are network stability issues, for example.
I see that we can increase the number of smtp processes. Is that recommended? Mine are set to 30. It doesn't look like there are ever 30 processes in the task manager.
Raising this can cause serious server stability problems (due to a problem with Windows), so it is not recommended. However, if you aren't normally seeing at least 30 service-started processes in the Task Manager, raising this would affect delivery speed in any way.
Then there is the: "tries before returning to sender" and "Queue timer." Are these settings a way to increase the smtp speed or a way to screw things up?
These will only affect E-mail that can't be delivered on the first try, so changing those settings to speed delivery would just speed delivery of problem E-mails, causing good E-mails to possibly be delivered less quickly.
2. I have 14,000 files in the spooler but the "View queue" shows about 5,000 emails. Is that because there are two or three files for each email or because there are some orphaned files floating around in there? If there are orphaned files is there a program to "match up" the email files and remove the orphans?
Each E-mail has 2 files (normally Q*.SMD and D*.SMD). If you see just one file (it would be D*.SMD), it's an orphan -- a "double bounce" where IMail could not deliver the E-mail, and couldn't bounce it either. If you use Windows Explorer and search the *.SMD files by date, any that are more than several days old should be the double-bounces (unless you have IMail set to re-try E-mails for many days).
The important question is whether those 5,000 E-mails are ones that have not been scanned/delivered yet, or whether they are re-tries. If they are re-tries, you probably have nothing to worry about (except the overhead of continually re-trying them all). If they are E-mails that haven't had delivery attempts yet, you probably have a DNS issue.
-Scott
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