My new company was running Exchange 5.0 and wound up on a spammers relay
list. I have recently upgraded to 5.5 sp3 but I still see messages in the q
with a address of <> and when I log the smtp interface I see mail being sent
with a Mail From:<>. I have gone through the is your server relay-secure
document and found nothing on the null address. Is there some way to block
all bogus mail addresses ?