I'm using Exchange 2000 sp3 on a Windows 2000 Adv Srvr.
I have a web-based SQL database hosted on a remote site for my users and
they need the ability to send outbound SMTP emails using the database but
using my SMTP engine.  Per the database host, I will need to setup mail relay

I am  using Windows SBS 2000 and intermittently, messages get stuck in the
Exchange SmallBusiness SMTP connector queue.  Though recipients to whom
messages are sent seem to be random, the problem occurs most often when
sending to aol recipients and seem to occur whenever sent to ...

Messages to domains using greylists for spam filtering sit in the SMTP queue
until the retry limit expires. Manually telneting to the host gives a "450
Recipient address rejected greylisted for 300 seconds....." error
How can Exchange 2000 SMTP server be configured to deal with ...