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Exchange 2010 receiving, clients/OWA can't see new messages (external)

Posted on 2013-01-17
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Last Modified: 2013-01-22
Hi all,

I am experiencing an issue with my Exchange 2010 server.  After a migration from Exchange 2003 to 2010, Exchange 2010 had been happily sending and receiving mail for over a month.  In the last two days it began having issues.  I have made a few changes and seen mail sporadically show on all OWA/Outlook clients.   Moving on to the results I have right now:

If I send a test message from GMail to a user on Exchange 2010 - it reports as being received.  However, in OWA and on an Outlook 2007 client the message does not appear.



Where do I start?  I will happily provide any information you need to assist in the matter quickly, and offer beer to anyone locally :)

Cheers,
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Question by:browningit
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by:DistributionAlternatives
DistributionAlternatives earned 250 total points
ID: 38789735
Try the built-in Exchange tools. From there, you can track messages and see exactly where they are going and how they are or are not getting there. Could be that the messages are getting stuck in the queue and just not being delivered. I have seen this with Exchange servers that are being bombarded with spam (doesn't sound like your case, but still similar symptoms).
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by:browningit
ID: 38789755
Well, it seems that my situation has degraded in the last few hours now.  I sent a Gmail test message and checked my logs and I don't see it as being received by tracking log explorer.  As DA posted above, I checked in on the Mail Flow Troubleshooter - Expected messages and it is satisfied with all the conditions, however the test message never arrives from MS either.  The log shows no test message from fabrikom.

Internal messages are still working.
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by:Manpreet SIngh Khatra
Manpreet SIngh Khatra earned 250 total points
ID: 38789761
If I send a test message from GMail to a user on Exchange 2010 - it reports as being received - What gives you this info ?

What does the headre of the email say where the delay happened ?
Run EXBPA and check no issues reported

- Rancy
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by:browningit
ID: 38789769
Sorry for the rapid posts, but I just had my test account at the client receive mail from the last few hours all at once.   ???  I have changed nothing for some time!  I have only played with the troubleshooter.

Rancy - The tracking log explorer said that the message had hit the store.  I know that makes no sense whatsoever as OWA just looks to the store, but that is what WAS happening.

I'll be running the BPA again now (it has come up clean several times in the past, love that thing on migrations!).  BPA still comes up clear on all fronts.  Only informational items listed.

I'll also look at headers of messages to see if I can note anything.

Any thoughts on why I just got a burst of mail from all my tests over the last few hours?  What does that?!

*edit:  After that random batch of received mail to all clients, I can clearly see that exchange got all the messages at the same time, which makes me think my original post may be inaccurate and I apologize for that.  At the time it was.  So what Tracking log is telling me now is that at 18:03:XX today, it received messages all at once from external sources for all users on the network.  A big "WHAT" was expressed on my side when this just occurred.

Cheers,
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by:Manpreet SIngh Khatra
ID: 38789811
Look what i can assume is that some handler got hung\stuck adn was released or some AV\Spam software was working on those emails and left them

- Rancy
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by:browningit
ID: 38789823
That's a thought, and it's ironport on the inbound trail.  I am going to pass that along to the fellow that has the credentials to the ironport system on site and see what he gets with it.

External email is still not coming through regularly, save for the last 'burst' I got at 18:03:XX.

I was given permission to access the ironport, and I am completely unfamiliar with their systems.  I did find that the ironport claims that the domain "mydomain.org" is "down".  Below that, it has a direct connection to the IP for the exchange server.  If anyone has insight on that, please let me know.  I am now trying to figure out why it can't see the Exchange server if it has a direct SMTP connection to it...
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by:Manpreet SIngh Khatra
ID: 38789951
Was some Service account password changed that is used for some Ironport or something

- Rancy
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by:browningit
ID: 38789960
No, no passwords for admin/ironport have been changed.  Messages are showed as queued on the ironport because that device believes the Exchange connection / server is down.  I'm researching what that means to ironport and what to trace to resolve.  Any input appreciated and thanks for all the assistance in thinking so far!
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browningit earned 0 total points
ID: 38790021
I restarted the two DNS servers on site and external email appears to be quick at the moment.  I am logging back into the ironport to verify if it no longer says "down", and will post a status update to this in an hour.  Again, thank you for all the input, bouncing ideas around like this is how I do my best work and I love this site for it.   (Worked elsewhere with a different account previously :)  Had to pay again to come back, best money I ever spend is here!)  

*edit  IronPort seems happy.  Either stupid ironport, or stupid DNS servers.  I am going to look into that issue now.  Again, I'll be back in an hour with a further update on how successful this was.  I'll dish out points to Rancy and DA then!
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by:Manpreet SIngh Khatra
ID: 38790154
Yes please take time to confirm issue is resolved at your end :)

- Rancy
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by:browningit
ID: 38790208
...But of course!

All still working.  DNS issues, as well as everything else I hammered out in the afternoon.  Again, I can't thank you all enough.  I'll see you around on here under the new moniker frequently replying to the other poor souls with issues.

Cheers,
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Author Closing Comment

by:browningit
ID: 38804836
The other two users in the thread allowed me to work through the issues in the network effectively - this is how I work best.  With their assistance I led myself down the path to check the DNS connection between the A-S device to Exchange 2010.
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by:Manpreet SIngh Khatra
ID: 38807039
Awesome that what we call Teamwork even though we dont know one another for sure :)

- Rancy
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