Microsoft KB Archive/155430

= XCLN: ErrMsg: No Transport Provider was Available for Delivery =

Article ID: 155430

Article Last Modified on 10/28/2006

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APPLIES TO


 * Microsoft Exchange Client 5.5
 * Microsoft Exchange Client 5.0
 * Microsoft Exchange Client 4.0
 * Microsoft Exchange Client 5.0

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This article was previously published under Q155430



SUMMARY
When you send mail using a Microsoft Exchange client, you receive the following error message:

Your message did not reach some or all of the intended recipients.

Subject: Subject of the message

Sent: 7/19/96 11:20:50 AM

The following recipient(s) could not be reached:

John Doe on 7/19/96 11:20:52 AM

No transport provider was available for delivery to this recipient.



CAUSE
This error is generally caused by an invalid recipient address. It can present itself when the address is an unrecognized or unsupported address type.

For example, using the Personal Address Book (PAB) to address mail. Typically, when migrating to Microsoft Exchange, users will tend to use a PAB entry to address mail. In some instances, the address looks like the friendly name that is also in the GAL, but when getting details of the user in the PAB, the address will contain that of the old mail system.



RESOLUTION
Delete the address from the PAB and then add the user back into the PAB from the Global Address Book (GAL).

Additional query words: Transport Provider

Keywords: kbusage KB155430

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