If I'm reading this correctly your mail server scanning internal email for spam/viruses. Is there anyway to disable spam/virus checks for internal email? Sounds like this is causing your performance issue. If your client virus definitions are kept up to date there's not much of a risk of viruses spreading via email. If anyone within your organization is sending spam to other internal users, then a proverbial smack on the side of the head should fix the problem. This is what we did at my last comany. We had 2 SMTP servers which handled internet email, scanning incoming internet email for spam & viruses, but only scanned internet outbound email for virues. Internal email was not scanned, we never had an issue with viruses spreading via internal email. user1@yourdomain -> user2@yourdomain - not scanned for viruses or spam user1@yourdomain -> user@someinternetaddress - scanned for viruses only user@someinternetaddress -> user1@yourdomain - scanned for viruses and spam -Nick <div>On 12/21/05, <a href="mailto:cisna-barry@wc235.k12.il.us">cisna-barry@wc235.k12.il.us</a> <<a href="mailto:cisna-barry@wc235.k12.il.us"> cisna-barry@wc235.k12.il.us</a>> wrote:<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">Hello List, I was wanting to get opinions on the performance increase of going from IDE to SCSI.interface. I've never had to worry much about this till recently. This school year I set up,,our own mail server ( Postfix/Dovecot/Squirrelmail/amavisd/clamav),, [works like a charm].. and now that we have all staff members using it,we are running into the following scenario. The three secretaries mass email out dailey announcements( about 350 users). So,, after they mass email it pulls down the email server for almost 10 <a href="http://mins.to">mins.to</a> were it is unaccessable.So hence as soon as this happens,,,phone rings>>"email is down yada,,yada". Actually it is only unaccesable for 30 mins,,out of the entire day,,,but non the less i hear about it:(.. I can see at the server the HD is running non-stop for this 10 minute time frame processing the outgoing emails. Ive tryed to encourage the secs..to just copy/paste,,announcments into the message body,,so as to not have attachemnts for the server to scan..but not gonna happen,,i dont think. This server does have onboard SCSI(promise) i beleive, but for some reason ( at the time),,I could not get K12LTSP to install correctly with SCCI,,enabled,,so i just cabled to the IDE interface. What will I be up against if ( over xmas vacation)if i merelry recable the HD's to the SCSI interface/enable onboard SCSI, and reboot the box. Im guessing im going to not be bootable,,with out manually reconfiguring GRUB somehow?:(. The server is: 1 gig single processor/Intel ,2 gig ram( maxed), dual 120 gig Hds 10/100 nics onboard, promise onboard SCSI TX-100( i think). I did run the linux disk access utilty on each drive but can remember what the numbers/speed were on this? If i attempt this,does anyone think this will resolve this "pull down to nothing" situation,,of the server / I know there are values that can be altered,,in Postfix,,as far as max processes,,etc,,,but Id like to leave these at defaults. I'm sure someone out there has run into this same snafoo.. Thanks for any input,,, Barry _______________________________________________ K12OSN mailing list <a href="mailto:K12OSN@redhat.com">K12OSN@redhat.com</a> <a href="https://www.redhat.com/mailman/listinfo/k12osn">https://www.redhat.com/mailman/listinfo/k12osn</a> For more info see <<a href="http://www.k12os.org"> http://www.k12os.org</a>> </blockquote></div>