We have internal users with @companyx.co.nz email addresses on the domain.

We have an external company who use @externalcompany.co.nz.

A single user on our domain (sam@companyx.co.nz) can't seem to receive messages from a single user on the external domain (bill@externalcompany.co.nz).

However, Bill (ext) can send to other users on our domain (int). And other members of the external domain/company can send to Sam (int) fine and others on our domain.

Bill (ext) receives no bounce back or errors.

SBS 2008 running Exchange 2007.

I've logged into OWA offsite as Sam to check that it's not just their Outlook software onsite filtering out the sender or some other reason but the message doesn't display in OWA either.

There is a forwarder setup from Sam to Alan (keeps copy in Sam's mailbox) and when Bill sends an email to both Sam and Alan, Sam does not receive it, Alan does.

Where would one look next?

Thank you.

  • Use the Message Tracking and Tracking Log Explorer tools to track a message from the external sender to the internal recipient. – joeqwerty Jan 30 '14 at 23:17
  • Thankfully it's enabled and I've found the log location but the latest logs are yesterdays. Are the logs not available until the next day? What would be a good way to test? Have the sender send a message to Sam and then email myself notifying me of the time it was sent? Then looking at that days log the following day for that time and seeing what I find? Sorry I haven't used these Exchange logs before :) – Logan Jan 30 '14 at 23:26
  • The logs should be updating in real time. Look in the message tracking directory and verify that you have at least one log file for the current day. – joeqwerty Jan 30 '14 at 23:36

Try something like:

Get-MessageTrackingLog -Start 1/1/14 -resultsize unlimited -sender 'bill@externalcompany.co.nz' -Recipients 'sam@companyx.co.nz'


Get-AgentLog -StartDate 1/1/14 | Where-Object {$_.recipients -like 'sam@companyx.co.nz' -and $_.p2fromaddresses -like 'bill@externalcompany.co.nz'}

in the Exchange Management Shell and see if either of those provide any enlightenment.

  • Thank you I will try and run these today or tomorrow - what specifically will I be looking for in the results? Thank you. – Logan Feb 3 '14 at 2:42
  • The top one will hopefully show the mail from bill@externalcompany.co.nz and to sam@companyx.co.nz hitting your server, and whether it was stored or rejected. The bottom one will hopefully provide a reason why it was rejected, if it was. – Katherine Villyard Feb 3 '14 at 2:44
  • Is there somewhere to attach the results? Too long to post in the comments box. – Logan Feb 11 '14 at 2:11
  • Pastebin? Or you could edit your question. – Katherine Villyard Feb 11 '14 at 2:12
  • Hah, never knew about pastebin! Cool! pastebin.com/HKZe7CeQ – Logan Feb 11 '14 at 2:56

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