>mail server is on.  Our company currently has about 2,000 users, 30,000

That's only .7 msgs/sec for a 12-day.  Almost any mail server can handle that.

2000 accounts is tiny.  Imail has servers of 10's of 1000's.

 >mail messages per day, and we have a dual-Pentium Pro 200 with 128 meg
 >of RAM.  Will this be sufficient?

Sounds reasonable. What speed is your link to Internet?

Do you run your own DNS on the same LAN segment as Imail?

Receiving msgs to Imail is very fast, but sending msgs requires Imail to do 
a DNS lookup (want a sufficiently available and fast DNS server), 
intiatiate contact with the remote server, shake hands, send the mail.

If the address is wrong or the other server is down or unreachable, Imail 
will then go into its queue-it-and-retry loop, eating up Imail throughput.

If your 2000 users are in the habit of sending mutli-megabyte files, then 
that eats up your backbone link real fast compared to 30,000 text msgs.

Len

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