I'm fairly certain the emails are not going into spam, as we get a daily digest of spam from McAfee Quarantine Manager, and we haven't received any notices. Our repository is set up to mail writers when issues are created/updated. Even this issue, which I'm following, I'm not getting email updates on. I had to check manually to see if the status had been updated. The last email any of us received was on September 20, 2011. The email addresses involved are:
I've attached excerpts from our mail server logs. It appears your mx servers are blocking us and returning "550 Denied by policy". Some information I found on the web indicates this is common behavior of Microsoft Exchange. I suspect you'll need to do something on your Exchange server or in the anti-virus software that runs on the Exchange server to whitelist us.
Our IT staff report that McAfee trusted source marked your IP address as High risk. You may want to see if you can get McAfee to verify your IP address to ensure you're not marked as high risk, though our IT staff filed a report with them too.