In Exchange 2010 I have a situation where if I send a message to both internal and external recipients, the external recipients only receive the message if I turn Sophos PureMessage off.  However, in both successful attempts and failed attempts the last record in my Exchange Message Tracking Logs is identical, as follows:

EVENTID = SEND

SOURCE = SMTP

SOURCECONTEXT = "...Message accepted for delivery"

That leads to my wondering what exactly that log entry means?

For example, it could mean "Sending server will attempt to deliver message"

or it could mean "Sending server has attempted to deliver message"

or it could mean "Receiving server has accepted message"

or it could means something else.  If you know *for sure*, can you please reply?  Please don't guess what it means.  Also, if you respond, please don't use the word "server" in your response without explicitly stating which server you mean (eg "sending server" or "receiving server").

If it turns out that log record does NOT indicate the receiving server accepted the message, can anyone tell me how I can be sure the receiving server has accepted the message?

Thank you very much!

• Edited by posixltd Saturday, January 31, 2015 2:00 PM

If it turns out that log record does NOT indicate the receiving server accepted the message, can anyone tell me how I can be sure the receiving server has accepted the message?

Hi,

You can try to enable the NDR. If the recipient's mailbox doesn't receive this email, it will return NDR to the sender.

Also try to configure Get delivery and read receipt confirmations. More details to see:

https://support.office.microsoft.com/en-us/article/Get-delivery-and-read-receipt-confirmations-a34bf70a-4c2c-4461-b2a1-12e4a7a92141?CorrelationId=f2166a89-93d0-4137-8268-601b7aa337cc&ui=en-US&rs=en-US&ad=US 

 

Thanks