We're doing some testing using internal company email addresses and finding that, even though Marketo shows the emails as delivered, none of our employees are receiving them. With the exception of one recipient, our internal exchange server log also shows that these messages were delivered...but again, no one received them and they are not in any spam or junk mail folders. According to IT, exceptions have been made for Mkto messages, so they should not be getting filtered out. It's like they've just gone out in space somewhere.
Sends to external addresses are working fine. This looks like an internal issue, but we want to cover all bases. Anyone run into this before?