Mailing List Archive

Please I need help on how to stop email spoofing for my organization .

For the past 3 months now I have been receiving email from the users who
does not have an account on our domain but this users using our domain to
send mail to other legitimate users email account in our organization.
Also, am receiving email that I didn't send. Am receiving email from my
email account. For instance, From: sun@count.com

To: sun@count.com



This is not real because I didn't send this message and when I check the
email header, I found out that this mail are coming from external IP
address.



Another example is as following



From: doux@count.com

To: sun@count.com



But doux is not a legitimate user because we don't know him in our
organization and that user does not exist on our network.



Am running Microsoft Exchange Server 2007 in my Organization and my domain
is hosted by (hostway) formerly known as value web.



Please I need help and any comment will help.



Thanks,



Abraham





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