I have a client that just moved from an SBS2000 to SBS2003 on a new box (4GB RAM, dual Xeons, 15k SAS drives, etc). They send out weekly small newsletters (~2MB) to some of their members (~400). On their old server they would send the newsletter at EOB because it would slow their DSL to a crawl both inbound and outbound. The messages would process overnight and their connection would be fine in the morning.Now, they try to send the same type of message and over 24 hours later the outbound queue is jammed with retries and their internet connection is non-existent. I had them break up the list into chunks of 50 users and those process fine, but they are currently converting a hardcopy monthly newspaper into .pdf format to send to all 4000 of their members and breaking the list into pieces isn't really going to work.Has anyone else experienced problems sending bulk mail and do you have any recommendations on resolving this?Thanks,Clark Ambrose

I find 3rd party vendors to be better for bulk email. it keeps the corp exchange server from being listed as a spammer, and helps protect from spoofing etc. They are also good about ensuring inbox deliveriability to major ISPs. do a search on 'email service provider' or esp. Otherwise, what's the upload speed on the DSL?

Is it possible for them to use the ISP as a smart host instead of just a data provider?

Depends on the ISP, but generally yes. However, all the mail will still have to go to the smarthost and eat up your bandwidth. With an ESP, the email is sent once to them then replicated off. Also, maybe your ISP could do listserve for you..that would allow you to send 1 copy of the email and let them duplicate.

A third party vendor may be the way we go, but I was wondering if there was a way to control the outbound flow of SMTP traffic with Exchange.As for spam, the mail is only going to members of this organization.The DSL is limited to 512Kbps up which is part of the problem. I'm also looking at our Cisco firewall and whether it can do packet shaping as a possible solution as well.