The important thing to remember: Even if recpients are notified that an oversize message cuoldnt be received by their org, what will they do with that information? The original snder will still have to resend the message smaller or find another way to transfer the files. It doesnt really gain you anything.

As mentioned natively with Exch you cant do it. If you really want this and want to notify, the sender/recipient or whoever or a combo of these, you can do so my using a proper gateway product such as IronPort/ClearSwiwft. This is one option, but just for notifications it's not worth the cost but there are other benefits involved with a proper gateway. Sukh

Is it possible with Exchange 2007 to notify users if an email they have been sent exceeds the message size limit/we only seem to be able to notify the sender which for external emails is not always sufficient.

Why isnt it sufficient? Doesnt the original sender know to resend it smaller or contact the recipient with another message to let them know they couldnt send it? Note that you arent really notifying the sender. Their own server is doing that. During the SMTP coversation, your SMTP gateway will typically reject a message that is oversized and the sender's MTA will then generate the NDR to let the sender know the message was too large.

It's usually emails from our clients and we've had a few occurances where they claim not to have received the auto reply (we know it was sent) - so it would be good for us if the recipient was also notified.

It's possible, but it would require a script or process to parse the smtp protocol log regularly, and send notification emails to the recipient when it saw emails being refused for being over the size limit. [string](0..33|%{[char][int](46+("686552495351636652556262185355647068516270555358646562655775 0645570").substring(($_*2),2))})-replace " "

It's usually emails from our clients and we've had a few occurances where they claim not to have received the auto reply (we know it was sent) - so it would be good for us if the recipient was also notified. Auto reply is not the same as a NDR though. If you accept the message, and then later reject it for any reason, you can track that with SMTP logging. Otherwise, there is no good practical way to notify internal recipients that your org never accepted the message.

Hi PanosE, How about the issue, any updates? Thanks, Evan Liu TechNet Subscriber Support in forum If you have any feedback on our support, please contact tngfb@microsoft.com

Hi PanosE, Per my knowledge, there isn’t any good practical way on Exchange Server that can help you achieve the goal. If you only need a limit notification, here is a workaround, hope can give you some help: Message limit notification http://social.technet.microsoft.com/Forums/en-US/exchangesvradmin/thread/80dc9fae-7714-4e1e-aa01-3d3e2ee253c0 Thanks, Evan Liu TechNet Subscriber Support in forum If you have any feedback on our support, please contact tngfb@microsoft.com