>Good morning,
>We current have been using EIMS (from Eudora) as our email server software
>for a few years. But as our number of Internet mail clients grows EIMS is
>gettting a bit unwieldly to manage (slow). I heard that SIMS has an
>web-based interface for management, great.
>
>Other than that, what are the advantages of SIMS over EIMS?
>Feel free to send your replies in private if you wish.
>
>Brian Holman
>Precision Internet Solutions - http://www.precisionsvc.com
>Web Design and Hosting
>Atlanta / Macon, GA
>
>[EMAIL PROTECTED]
First off, I'm an ISP, and my accounts are all ISP email accounts....
mostly dial-up customers.
I went from EIMS to SIMS years ago, and never regretted it one bit. But I
don't want to start a EIMS vs SIMS war. Quite simply, SIMS does POP and
SMTP really really well. I went from a PowerMac 6400/180 running EIMS
(1.something) to a PowerMac 7200/90 running SIMS 1.7b-something. The
slower machine running SIMS was much faster, but it's not fair to compare
EIMS 1.something to even version 1.6 of SIMS. EIMS 1.something wasn't a
mature product, it had just been renamed Eudora Internet Mail Server from
Apple Internet Mail Server. At about a thousand accounts, I had to move
my hardware from 7200/90 to a Power Computing 210 MHz with some faster
SCISI in it and a 604e CPU.
A few thousand accounts later, the hard drives in the Power Computing
machine couldn't keep up, partly because I was running Remus RAID software
RAID 1. So the computer had nearly twice the disk operations of a 'normal'
machine, but still, the hard disks were pretty much throttled all day long.
They would literally grind for hours on end. However, running the web
admin. would sometimes really bog down the machine, if it was already busy
doing a few dozen inbound, few dozen outbound, and a dozen or so POP
connections.
So, I stuck with SIMS, and just tossed some more hardware at it.
I took a 733 MHz G4, with a 64 bit Adaptec SCSI 160 card in it, and
connected it up to a half-teribyte hardware RAID 5 array. This, by the way
will work well when I migrate to Communigate Pro someday.
Overkill? Yes. One less thing to worry about? Yes.
SIMS is now REALLY REALLY FAST. During the busiest of times, when I cannot
even scroll to the bottom of my SMTP inbound and outbound connections
because they're updating so fast, my Eudora email client can check 6 of
my personal email boxes in under one second. SIMS will now parse a 8 MB
daily log file in 2 seconds. I've seen the 5 minute average data rate out
of the mail server exceed 2 Mbit/sec, so I do have a pretty good amount of
mail server load. When someone decides to forward a 6 MB attachment to
their address book, it's easy for a mail server, and the network supporting
it, to come under a little bit of load.
-Jerry
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