XADM: Problem When Creating Multiple SMTP Proxy Addresses

The information in this article applies to:

• Microsoft Exchange Server, version 4.0

SYMPTOMS

When you add a new SMTP address to an existing SMTP Custom Recipient in Microsoft Exchange Administrator, you may get an non-deliverable report (NDR) when you send the mail to the Custom Recipient.

WORKAROUND

When a Custom Recipient is going to require multiple SMTP addresses, and the primary address is alphabetically less significant then the secondary address, you can create an additional Custom Recipient.

STATUS

Microsoft has confirmed this to be a problem in Microsoft Exchange Server version 4.0. We are researching this problem and will post new information here in the Microsoft Knowledge Base as it becomes available.

MORE INFORMATION

After you add a new SMTP (Internet) address under the E-Mail address tab in the properties for a SMTP Custom Recipient, the E-Mail address under the General tab may change to the one just added. This may cause mail sent to that Custom Recipient to not be delivered and generate an NDR back to the sender.

There is currently a problem when you add a new address to a Custom Recipient. When a new address is added, if the e-mail domain is alphabetically more significant then the original email address, it will change the original SMTP address to the new one. In most cases this will cause am NDR.

For example,

Create a new Custom Recipient with the SMTP address JOHNDOE@COMPANY.NET

Go into E-Mail Addresses and create a new SMTP address JOHNDOE@COMPANY.COM

Go back into the General tab and the new address will be JOHNDOE@COMPANY.COM

Another example:

Create a new Custom Recipient with the SMTP address JOHNDOE@ARMY.MIL

Go into E-Mail Addresses and create a new SMTP address JOHNDOE@AIRFORCE.MIL