I recently started having problems sending emails from my small business server 2003 Exchange. Contacts that have yahoo, msn, gmail, etc, are not receiving none of my emails or marking them as spam.
I host my own server and I use an MX record on my Registerer that points to my public ip address and everyting was working fine up until this Monday. I have not made any changes on my server. Also some contacts that do not have gmail or yahoo are getting my emails fine.
Any information is greatly appreciated.
Sam De La Cruz