Same problem here except we don't recve any email on 5 of our 10 clients. Everything is ok, they are all on a domain. I set the proper rules internal to external protocol pop3 and for the heck of it pop3S and almost every mail protocol out there and still five machines don't get email. I substituted the KWF with ISA and it works SO I know its a problem with KWF. Don't want to use ISA, I like KWF anyone have a solution?
Charles