On Tue, Mar 14, 2006 at 10:39:58PM +0100, Jan Pieter Cornet wrote: > Same here. Our outgoing servers are doing virus scanning (using > 3 different scanners), and from/to address verification before > accepting the email, all with negligible delays (on average > around 900 msec for all of this).
I lied, I was thinking about a recent setup where we accidentally did 6x over virus scanning, which is slighly excessive. It's 450 msec on average per email now, I just verified it in the logs again. Virus scanners take around 100 msec each, the from/to address verification takes slightly longer because of DNS lookups. Less than half a second is apparently good enough for the outlook users, as I haven't heard any complaints about that part. Then again, the "throw enough hardware at it" goes for us too. Currently using 17 intel dual xeon 2.8GHz machines with 4G RAM each, with hardware RAID 2x SATA disks for around a 2.5 million messages/day. One very important thing to do in these days, is to separate your incoming and outgoing mail servers, even if you're a small shop and one box could handle it. The hardware is cheap enough, and you will earn that investment back with the time saved in the ease of configuration, because the two servers will need quite different configurations. -- Jan-Pieter Cornet <[EMAIL PROTECTED]> !! Disc lamer: The addressee of this email is not the intended recipient. !! !! This is only a test of the echelon and data retention systems. Please !! !! archive this message indefinately to allow verification of the logs. !! _______________________________________________ NOTE: If there is a disclaimer or other legal boilerplate in the above message, it is NULL AND VOID. You may ignore it. Visit http://www.mimedefang.org and http://www.roaringpenguin.com MIMEDefang mailing list [email protected] http://lists.roaringpenguin.com/mailman/listinfo/mimedefang
