XCON: Erroneous Deletion of SMTP and SNADS Routes During Routing Recalculation

You may experience some non-delivery reports (NDRs) when you send messages to SNADS or SMTP (Simple Mail Transfer Protocol) addresses.

During recalculation of the local routing table, routes that are imported from other sites may be dropped. This concerns routes of the form "SNADS =" or "SMTP =" where no routing value is configured.

You can temporarily create a LOCAL route that will not be replicated in other sites.

Microsoft has confirmed this to be a problem in Microsoft Exchange Server versions 4.0. This problem has been corrected in the latest U.S. Service Pack for Microsoft Exchange Server version 4.0. For information on obtaining the Service Pack, query on the following word in the Microsoft Knowledge Base (without the spaces): Microsoft has confirmed this to be a problem in Microsoft Exchange Server versions 5.0.

A supported fix is now available, but has not been fully regression-tested and should be applied only to systems experiencing this specific problem. Unless you are severely impacted by this specific problem, Microsoft recommends that you wait for the next Service Pack that contains this fix. Contact Microsoft Technical Support for more information.

Microsoft has confirmed this to be a problem in Microsoft Exchange Server version 5.5. This problem has been corrected in the latest U.S. Service Pack for Microsoft Exchange Server version 5.5. For information on obtaining the Service Pack, query on the following word in the Microsoft Knowledge Base (without the spaces):