Hello, I?m trying to configure Exchange Server behind an ISA Server. Today we have a Proxy Server 2.0 and this feature running ok (inbound and outbound mails can traffic without problem), but in a ISA Server I can do only outbound mails when I send email outside to inside users it?s not arrive at user. I can?t see any kink of errors and logs. Our DNS that is defined at W2K on the same server that has ISA Installed. Everybody knows any paper that can help me? Thanks in advance Valdemir Santos BR - SP