Internet Mail Not Delivered: No Transport Provider Available

When you attempt to send mail using the Internet Mail information service for Microsoft Exchange, you may receive a non-delivery receipt with the following message:

This problem can occur when the following conditions are met:

• The Internet Mail information service is the only information service that is installed.
• You have configured the Internet Mail information service to connect to your Internet service provider using a modem instead of the network.
• The Work Off-Line And Use Remote Mail check box is not selected.

When all of these conditions are met, you receive a non-delivery receipt if any of the following events occur when Microsoft Exchange attempts to connect to your Internet service provider:

• The line is busy.
• There is no answer.
• Modem negotiation fails.
• Logon fails.
• You cancel the connection.

To work around this problem, use either of the following methods.

Method 1

Select the Work Off-Line And Use Remote Mail check box. To do so, follow these steps:

1. In Microsoft Exchange, click Services on the Tools menu.
2. Click Internet Mail, and then click Properties.
3. On the Connection tab, click the Work Off-Line And Use Remote Mail check box to select it.
4. Click OK.

When the Work Off-Line And Use Remote Mail check box is selected, you can compose messages and send them to the Outbox at any time, and then send the messages to the recipients when you manually connect to your Internet service provider.

Method 2

Add another information service to your Microsoft Exchange profile. To add the Microsoft Mail information service, follow these steps:

1. If Microsoft Exchange is running, click Exit And Log Off on the File menu.
2. In Control Panel, click Mail And Fax.
3. Click Add.
4. Click Microsoft Mail in the list of available information services, and then click OK.
5. On the Connection tab, click "Remote using a modem and Dial-Up Networking."
6. On the Remote Configuration tab, verify that the Use Remote Mail check box is selected.
7. On the Dial-Up Networking tab, select the Dial-Up Networking connection that you use to connect to your Internet service provider.
8. Click OK.

Microsoft is researching this problem and will post new information here in the Microsoft Knowledge Base as it becomes available.

When the Work Off-Line And Use Remote Mail check box is not selected, Microsoft Exchange attempts to connect to your Internet service provider each time you start Microsoft Exchange. After all messages have been sent and received, Microsoft Exchange disconnects from the Internet service provider.

When you send a message using the Internet Mail information service, the message is placed in the Outbox and is not sent until Microsoft Exchange checks for new messages. To configure the interval Microsoft Exchange uses to check for new messages, follow these steps:

1. On the Tools menu, click Services.
2. Click Internet Mail, and then click Properties.
3. On the Connection tab, click Schedule.