Yes, when the following conditions are true:(which they usually are for our average small business client who doesn't alert us first that they want to do this)
* Untuned smtp server * T1 or less bandwidth * Unsanitized contact list * 1000+ contacts ...then yes, you can very easily swamp the SMTP server and the oubound bandwidth. Exchange itself is usually find for internal-internal emails, but the queues, firewall and outbound traffic are often swamped. I've seen this about five or six times in the last 5+ years; it's usually the first (and only) time a client tries to send a mass email out to their entire contact list they've painstakingly build up in an Exchange public folder (or multiple, given the limits on Exchange address lists...) -- Durf On Feb 7, 2008 4:21 PM, Ben Scott <[EMAIL PROTECTED]> wrote: > On Feb 7, 2008 2:49 PM, Durf <[EMAIL PROTECTED]> wrote: > > Unless you have a *very* sanitized mailing list and more than a T1 > worth of > > bandwidth, I would expect sending out a mass mailing like that to have a > > good change of bringing down your Internet line and/or your SMTP virtual > > server, depending on your bandwidth and how 'clean' your mailing list > is. > > I've had occasion twice over the past six months to send out a mass > mailing to about 360 addresses. We've got a fixed-wireless feed we > use for SMTP and VPN. 512 Kbit/sec CIR, 1.5 Mbit/sec MIR. I just > dumped the message body into Sendmail on our Linux Internet gateway > (rather than going through our Exchange server first). All but about > 15 addresses were delivered (or bounced) in under 15 minutes; the rest > were in queue for later retry due to unreachable servers. That's with > no special planning/configuration, and regular SMTP and VPN traffic > still going. > > While 1000 is obviously almost three times as many recipients, I'm > still surprised to hear Exchange on a full T1 would fold under the > load. Are you sure of that? > > -- Ben > > ~ Ninja Email Security with Cloudmark Spam Engine Gets Image Spam ~ > ~ http://www.sunbeltsoftware.com/Ninja ~ > -- -------------- Give a man a match, and he'll be warm for a minute. But set a man on fire, and he'll be warm for the rest of his life. ~ Ninja Email Security with Cloudmark Spam Engine Gets Image Spam ~ ~ http://www.sunbeltsoftware.com/Ninja ~
