Sending email from a smarthost or your ISP’s outgoing SMTP server can often lack the necessary capabilities required to host a quality mail server. It’s too often I’ve seen an ISP completely change the ports it uses, lock down access from your server, just plain suck at sending mail to certain domains or even take forever to deliver the message to the recipient. If you experience any of these issues you’ll probably be better off switching to the DNS/MX method of sending mail. Here’s the process:
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Exchange 2003
- Exchange System Manager
- Connectors
- SMTP Connector
- right click and go to Properties of your SMTP Connector
- select “use DNS to route each address space on this connector”
- select OK
- restart the Simple Mail Transfer Protocol service (SMTP)
-
Exchange 2007
- Exchange Management Console
- Organization Configuration
- Hub Transport
- Send Connectors
- right click and go to Properties of your send connector
- Network Tab
- select “Use domain name system (DNS) “MX” records to route mail automatically”
- select OK
- restart the Exchange Transport service