Exchange 2003 will only deliver to interior domains

Exchange 2003 will only deliver to interior domains

Mail exchange (MX) is just another name for the machine whose primary function is receiving and sending email. This machine usually has a mail server listening on port 25 to receive incoming email. A Mail Delivery Agent (MDA) reads the header and decides whether it needs to be put in a mailbox on its own machine or sent back out over the Internet to a remote machine. An MX (Mail exchange) record will redirect email sent to any user's machine ([email protected], for example) to a designated mail host. It tells the MDA where to route email. The MX record uses preference values to specify the routing order–low value = high priority. For example, when mail is sent to domain.com it tries to reroute the mail to mailhost.domain.com which has the lowest value, and therefore the highest priority. If that fails, it tries mailhost2.domain.com which has greater value than mailhost.domain.com.

Use SMTP Connector to route mails to external mail servers otherwise your all external routed mails will be in queue and not delivered to external mail servers.

Mentioned below are the steps to create new SMTP connector In the Context Menu of the Connector Container of Exchange Manager click New – “SMTP Connector”. Give name to the new Connection. then you have to select “Use DNS to route to each address space on this connector”. It is the recommended configuration for Exchange 2003. (It only works when DNS settings are correct) It is also possible to “Forward all mail through this connector to the following smart hosts”. When you prefer this type you must type the host name into the field or the IP address of the Smart Host in Brackets. Smart host is another machine that routes your mail and your mail server does not route mail.