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Exchange 2010 ... could not send message thru OWA

Question
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EXCHANGE 2010 SP3
Sending mails stop working. Restarting Exchange does not help. All Exchange services are up.
If a user sends mail from owa, the message automatically goes to draft.
If I run test-mailflow on exchange shell, I recieve a failure.
How else can we track why this problem appears? We havent found the root of the problem yet.
bostjanc
Wednesday, May 22, 2013 10:01 AM
Answers
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The problem was on ISA server.
After updating ISA server with latest updates and enable throttling on isa, everything started to work fine.
bostjanc
- Proposed as answer by Om Prakash Nath Thursday, May 23, 2013 1:21 AM
- Marked as answer by B_C_R Thursday, May 23, 2013 9:33 AM
Wednesday, May 22, 2013 9:04 PM
All replies
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Give us a little bit details of your infrastructure.
Is this happening for both internal\external mail?
OM (MCITP) | Blog
Wednesday, May 22, 2013 10:13 AM -
Sending message from internal user (thru OWA) to another internal user (thru OWA) not working.
Sending message from a user (thru OWA) to outside world (gmail.com email address) not working.
bostjanc
Wednesday, May 22, 2013 10:21 AM -
Disabling ForeFront (FSCUtility /disable) resending messages, does not help.
Messages still stucked in drafts :(
bostjanc
Wednesday, May 22, 2013 10:56 AM -
Your hub servers seems to be having back pressure issue,
http://exchangeserverpro.com/exchange-transport-server-back-pressure/
Don't Let go..
Wednesday, May 22, 2013 11:23 AM -
I will try to recreate recieve and send connectors to see if it's going to be better.
bostjanc
Wednesday, May 22, 2013 11:25 AM -
Sending message from internal user (thru OWA) to another internal user (thru OWA) not working.
Sending message from a user (thru OWA) to outside world (gmail.com email address) not working.
bostjanc
What about Outlook?
OM (MCITP) | Blog
Wednesday, May 22, 2013 11:59 AM -
Im unable to use outlook, because I'm an external administrator of this domain, only OWA currently...
I believe send connectors are wrongly set up.
The have two exchange 2010 servers, and I see messages in queue on 2nd server.
Im dealing with this error:
http://ilantz.com/2011/04/10/432-4-3-2-storedrv-and-store-driver-throttling/
if its going to help, I will let you guys know.
bostjanc
Wednesday, May 22, 2013 12:01 PM -
The problem was on ISA server.
After updating ISA server with latest updates and enable throttling on isa, everything started to work fine.
bostjanc
- Proposed as answer by Om Prakash Nath Thursday, May 23, 2013 1:21 AM
- Marked as answer by B_C_R Thursday, May 23, 2013 9:33 AM
Wednesday, May 22, 2013 9:04 PM