I am receiving incoming email fine and can send email internally with no problems. I just cannot send email external to my domain. I'm fairly certain port 25 is open, I had this up and running several months ago. After a rebuild, I have not successfully regained the ability to send email. I get the usual response of an email to let me know the message has been delayed, then an undeliverable a day or so later. I'm not sure what to check. I run a single domain, single DC so the MX is not the problem. Any help would be greatly appreciated...Thanks!!!
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Exchange 2000 will not send any external mail
- Thread starter hurrikane
- Start date
brontosaurus
MIS
sounds like a DNS issue. Check the SMTP virtual server settings. Can you telnet to an external mail host on port 25 and send a message?
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