XFOR: IMC: NDR is Held Until Timeout Period Expired (140934)
The information in this article applies to:
- Microsoft Exchange Server 4.0
This article was previously published under Q140934 SYMPTOMS
If you send a message to multiple SMTP users, you may not receive Non-
Delivery Receipts (NDRs) until the timeout period for the message transfer
has elapsed. This only occurs if one of the recipients cannot be reached
because their mail host is down and another recipient has an incorrect
address.
CAUSE
The Microsoft Exchange Internet Mail Connector (IMC) holds all NDRs until
it has exhausted all connection attempts so it can deliver only one NDR per
message to the sender.
STATUS
Microsoft has confirmed this to be a problem in Microsoft Exchange Server
version 4.0. This problem was corrected in Microsoft Exchange Server 4.0
U.S. Service Pack 2. For information on obtaining the service pack, query
on the following word in the Microsoft Knowledge Base (without the spaces):
The IMC will now return an NDR for the invalid recipient (the one with the
incorrect address) before the message times out. Under normal operating
conditions, the NDR for misspelled domains would be generated within a
minute or two after the first attempt to deliver fails. If the IMC has a
heavy load of messages to many different domains, it may be longer. The
time for generating the NDR and submitting to the Microsoft Exchange
Information Store (IS) will be the same as if you returned a message from
the IMC's Queue page.
| Modification Type: | Minor | Last Reviewed: | 4/28/2005 |
|---|
| Keywords: | kbusage KB140934 |
|---|
|