We have an exchange 2010 server with forefront protection for exchange installed and are having problems with certain legitimate emails not being downloaded.
I can see in by logging onto Horde on our hosting company that some emails are not being downloaded usually spam, but occasionally legitimate emails from clients and not being downloaded. These clients are not always being blocked so something in those particular emails are causing them to be marked as spam. I have added them to the whitelist in forefront, because the dns of mail.mycompany.com is pointing to our exchange server the hosting company say that their email spam filters are not in effect. So I'm hoping someone can help direct me to what else might be blocking emails from being downloaded or somehow allowing ALL emails to be downloaded and letting forefront deal with the filtering.
Thanks.