Is the IIS SMTP server on the same machine as CF? It's a good idea to attempt making your CF machine focus mainly on serving ColdFusion requests (and HTTP requests). If it's doing alot of DNS lookups, which are required for a mail server to operate, it can slow down other services on the machine. I have used the IIS SMTP on a CF machine before as a local relay to another machine that's the final MTA. I think the IIS SMTP engine is just fine for sending smallish volumes (like 20,000 a day), but you may have better success putting it on it's own machine.
Also, as far as your messages not getting through to the final destination, there have been quite a few threads in the past about messages created by CF being identified as spam and what to do about it. Google or the HOF search should get you those threads... -Cameron On 5/17/05, Protoculture <[EMAIL PROTECTED]> wrote: > We are currently sending out large batches of emails using the default iis > smtp server. We are finding that many users are not getting emails and the > queue folder has many items in it. They seem to be getting sent ( as the > queue folder gets smaller )...but the problem remains that there are users > who never get their emails. > > The daily volume would be around 20,000. > > On the Database / CF end things seem fine as users who dont get emails can be > seen in the queue.... > > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~| Logware (www.logware.us): a new and convenient web-based time tracking application. Start tracking and documenting hours spent on a project or with a client with Logware today. Try it for free with a 15 day trial account. http://www.houseoffusion.com/banners/view.cfm?bannerid=67 Message: http://www.houseoffusion.com/lists.cfm/link=i:4:207006 Archives: http://www.houseoffusion.com/cf_lists/threads.cfm/4 Subscription: http://www.houseoffusion.com/lists.cfm/link=s:4 Unsubscribe: http://www.houseoffusion.com/cf_lists/unsubscribe.cfm?user=89.70.4 Donations & Support: http://www.houseoffusion.com/tiny.cfm/54

