| Event Id | 9006 |
| Source | MSExchangeTransport |
| Description | The FQDN of a remote server is also configured as a local domain on this SMTP virtual server. This is causing 5.4.8 NDRs. Please remove unik.dk from your recipient policies. Data: 0000: c0040242 |
| Event Information | According to Microsoft: CAUSE: A server to which you are trying to send mail has a Fully Qualified Domain Name (FQDN) that matches the domain name in the E-Mail Addresses of a Recipient Policy. The behavior described in the "Symptoms" section of this article can occur in a mixed mode environment if the NetworkAddress attribute of the Microsoft Exchange 5.5 server matches the domain name in the E-Mail Addresses of a Recipient Policy. The NetworkAddress attribute is created using the Host and Domain Name fields under the TCP/IP Protocol settings. WORKAROUND: Remove or rename the recipient policy, or rename the server, thereby changing the fully qualified domain name (FQDN) of that server. The following is an example of an FQDN in the recipient policy: Type:SMTP Address: ServerName.Domainname.com Change this in the recipient policy to reflect: Type:SMTP Address: DomainName.com On an Windows NT 4.0 Exchange 5.5 server, the NetworkAddress attribute is created using the Host and Domain Name fields under the TCP/IP Protocol settings. The host name should not be the e-mail address domain name from your recipient policies. Generally, the host name would be the NetBios name of the Windows NT 4.0 computer on which Exchange 5.5 is installed. You can view the NetworkAddress attribute by using the Exchange 5.5 Administrator in Raw Mode. |
| Reference Links | XCON: Recipient Policy Cannot Match the FQDN of Any Server in the Organization, 5.4.8 NDRs |
Catch threats immediately
We work side-by-side with you to rapidly detect cyberthreats
and thwart attacks before they cause damage.