Can’t send mail – Exchange/ISA

Hi all,

I have an ISA box and an Exchange 2000 sp3 box.

I am unable to send any email. I always get the delay error.

DNS is working fine. On the Exchange box, I am able to resolve external sites, ie. www.msn.com, www.google.ca, etc.

I am able to receive email, but can’t send any.

I created protocol rules in ISA to allow SMTP outbound access and created a rule for DNS outbound access.

Am I missing anything else?