I've been thrown in to troubleshooting our new Exchange Server 2003 and I'm having a hard time deciphering exactly what's going on. I can seemingly send emails out, and the queue shows everything looking good, but the emails never show up where intended. They seem to just disappear. Everything I've checked (DNS, smtpdiag, etc) shows everything working correctly. There are no errors showing up anywhere that would indicate a problem.Am I missing something obvious?

PurpleCactus: This can be caused by a few different reasons: anything from DNS, forwarders, firewall, SMTP connector configurations, etc. First place I would check is to go tot the SMTP Virtual Server and check your DNS settings. If this doesn't work, post back -Allen Firouz From KB 319426: How to Configure the SMTP Virtual Server Exchange uses virtual servers for SMTP and other common Internet messaging protocols. To configure an SMTP connector, either create a new SMTP virtual server or use the default virtual server. In most environments, you will use the default SMTP virtual server. 1. Click Start, point to Programs, point to Microsoft Exchange, and then click System Manager. 2. Double-click on the Servers icon in the left pane. 3. Click the server that you want to configure, and then expand Protocols. 4. If you plan to use a new SMTP virtual server: a. Right-click the SMTP protocol object, point to New, and then click SMTP Virtual Server. b. After the wizard starts, type a name for the SMTP virtual server, and then click Next. Microsoft recommends that you use a name that describes the function of this virtual server, such as "Client Access Virtual Server." c. Click the IP address to which this SMTP virtual server will bind, and then click Finish. 5. Right-click either the default SMTP virtual server or the virtual server that you just created, and then click Properties. 6. Click the Access tab, and then click Relay. 7. Confirm that Only the list below is selected and that the list is empty. Optionally, you can clear the Allow all computers which successfully authenticate to relay, regardless of the list above check box, and then click OK. Note If you have mail clients that are using a different protocol (for example, Post Office Protocol v.3 [POP3]) that use SMTP to deliver mail, Microsoft recommends that you create a separate SMTP virtual server for that purpose. 8. Click the Messages tab, and then reduce the number of recipients for the message from the default setting of 64,000 if appropriate. 9. Click the Delivery tab, and then click Advanced. 10. Click Configure to configure external DNS servers for this virtual server. You must configure external DNS servers for this virtual server if you are running separate internal DNS servers for your Local Area Network (LAN). If you add one or more external Internet DNS servers, you enable your SMTP virtual servers to resolve and deliver to external domains. To add an external DNS server, click Add, type the IP address of the external DNS servers, and then click OK. Add a second DNS server for redundancy, and then click OK three times.

What mail dont show? tosome domains or internal mail?

Hi, Tracking message is the best option, it will show you exact status.Dinesh