The following event messages can be logged on QCS console:
"[2007/09/15 19:21:19.755] (3) Warning :<core></core>(29819) Synchronization partner is not responding."
and
"[2007/09/15 19:30:35.545] (3) Information :<core></core>(29865) Connection to synchronization partner has been restored."
Why is this occurring and how this problem can be troubleshooted?
The issue will occur if QCS is not receiving an acknowledgment to SMTP packets within the time frame configured under Collaboration Services - Properties - Transport - Send - Message Delivery. This can be due to:
1. Exchange SMTP messages loss.
2. Sync partner is not processing received packets:
a) Outdated sync partner key - messages can not be decrypted.
b) QCS service is not running.
c) QCS is unable to access its mailbox.
3. There is a second installation of QCS configured to access the same service mailbox.
ACSAlerts.log files from HQ and branch (sync partners) can be searched for Event ID 29861 within the same time frame (day) and then compared. From the below example:
Branch
[2007/09/16 15:07:26.646] (1) Information :<core></core>(29861) Total messages sent: 295
Total messages received: 185
Total data sent: 17075 KB
Total data received: 2250 KB
Duplicates sent: 237
Duplicates received: 79
Acknowledgements: 185
HQ
[2007/09/16 18:47:43.012] (1) Information :<core></core>(29861) Total messages sent: 186
Total messages received: 58
Total data sent: 4196 KB
Total data received: 4611 KB
Duplicates sent: 81
Duplicates received: 0
Acknowledgements: 58
Auxilary messages: 0.
Branch sent 237 duplicate messages as no delivery was confirmed to the original messages. HQ received 0 duplicates meaning ALL original QCS packets were not delivered or processed and duplicates were processed by HQ as original messages. Total messages sent from branch were 295 while HQ received only 58. On the other hand total messages sent from HQ 186, received by branch 185 - numbers can be considered equal because the events were not logged at the exact moment. The above example demonstrates SMTP communications issues between Branch => HQ.
