Runnign Exchange 5.5 SP4 I recently had someone report to me that she was not getting all her emails from a specific company. The company was running an online training service and each time someone would sign up for a course, their system is supposed to send us and them, course confirmation emails. The system uses the BCC field to send these emails to us while the TO field contains the email address of the person who signed up for the course. So 3 people receive the confirmation, the person who signed up for the course, my staff person (blank copy) and the person at the company offering the service (blank copy). The problem is that some of these emails don't come through at all or sometimes if they do come through, it takes a couple of hours or even a day or so to reach us. I have enquired from the company whether they are having any problems with their mail service and they claim that the blank copies of the email confirmations reach them right away so they are pointing a finger at us saying the problem is at our end. However, I have had no problems sending myself emails from other sources. I have tried sending myself emails from my Yahoo, Hotmail and even my Verizon account and all the emails reach my Exchange server right away. I even sent myself an exact duplicate of the email confirmation that goes out spoofing the FROM address to read as the sender of the email confirmation message and they do come through almost instantly (which proves that my spam server is not catching these emails). Is it still possible that the problem might be on our end ? Why then would some emails reach my server instantly and some wouldn't ? I haven't had any other complaints from others about emails not reaching us on time. Please advise. Thanks
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