My developer has created a a web-based using sqlserver 7.0 and aspqmail. One function of this application is to serve as an announcement list to our 2,500 subscribers. There is a very good chance that our subscriber list could grow to 20,000 or more. The problem is that the "system" or this "application" crashes consistantly around the 1,500th email. I have read where aspqmail is being used to send 50,000 messages at a time. I cannot find any info resource that addresses this problem. Has anyone out there implemented a high volume aspqmail solution? Do we need a dedicated email server?