>I am also having trouble with what would appear to be SMTP bouncing off and
>on.

>Plenty of processing power, RAM and disk space.

famous last words!  vbg

 - Compaq Proliant, dual 400 MHz PII processors, 500 Mb Ram, SCSII Raid

>Periodically, individual domains will stop accepting mail,

what's the Imail log say about this??

 - nothing in the log

>and the messages will bounce back to the sender.

what's the reason for rejecting?  either in the msg or in the log (if you
have one or can turn it one) of the mail client pgm?

 - Nothing in imail log, imail seems to think it's still running.
 - Remote SMTP servers trying to send for xx hours, I don't have access to
their logs, have only gotten those admin reportsd forwarded to me by
customers.
 - Our clients (Outlook or eudors) report 'can't connect to server'

Are these senders sending from local Imail accounts or are they coming in
from remote mail servers?

 - remote servers can't send mail in,
 - customers can get e-mail off the mail server,
 - customers can't send mail out through mail server.

>BUT I have to stop and re-start the SMTP service in the control panel,
>if I try it in the IMail administrator panel it hangs on stopping the
>service and never changes to stopped, even thought the service shows as
>stopped in the NT services control panel. I re-start it in the NT services
>control panel, everything's up and running, and the imail control panel
>still says stopping...

I've never had to do that (with Cold Fusion, yes, with Imail, no).  Sure
sounds suspicious, doesn't it?

When your machine gets into one of these states, I'd look in the NT Task
Manager and see what the CPU load is, how many SMTP and SMPTD processes are
listed, look in the Imail control panel Queue tab. and look in the log file.

Do some of these domains have domain-level filtering rules??

Len


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