Outlook 2000 sending reply with no reply set

[Guest]

Have a mailbox for all our Corporate email where people can send to a generic
email address (e-mail address removed) for example. Today we got a lot of
undeliverable messages as if the Corporate email account replied to the
mails. There are absolutely no rules set to send replies when mail is
received. What might have caused this. There were about 50 and they were
for various email addresses. Some said the email address did not exist on
their server.

Just trying to figure this out to prevent it in the future
thanks

 

[Roady [MVP]]

Could have been the result from some spam attack where they abused your
address.

If you're having an hosted Exchange service;
http://www.crn.com/sections/breakingnews/breakingnews.jhtml?articleId=196800107