This is a second post on the same problem. I am now wondering if there is a virus that can bounce certain emails and leave others to be delivered. It is like there is an exception list, however I have checked the delivery messages filter. It is empty. What happens is that certain emails are returned to the sender as undelivered. For example Judith.Hunt@test.water.gov.au sends an email to ihunt@boaccount.com.au. It is returned and postmaster gets the message about it being undeliverable possibly because it is bouncing between two servers. The problem is escalating. Another one is vjack@algw.gov.au sends an email to vjack@boaccount.com.au. Nortons AntiVirus Enterprise edition with Exchange is running and is not reporting any viruses. I redid the server, but saved the emails and I think that was a mistake. Can ideas??
Thanks
Gypsy
PS It is a standard setup of SBS 2000 using Exchange 2000 service pack 3 is installed. By the way these people who are not getting certain emails are getting others and I can email them without a problem.
Help would be appreciated.