mail send error: "The remote host is not known TCP/IP host"

[sasj0e]

Hi
I am facing problem with sending mails from the Domino 6 server machine.
I am trying to send a mail from Domino 6 server using Notes 6. But when send the mail, then a message box pops up with "The remote host is not a known TCP/IP host" as message.
If anybody know whats wrong here...then pls let me know...

I am able to send and recieve mails for the same user from different machine.

Please help
sas

 

[Packet7]

Hello,

To my knowledge, this usually refers to an error with reaching the SMTP Gateway. I would run an nslookup on the Domino server and make sure you can resolve the domain name. I would then try and lookup the MX record for the domain and open a telnet session on port 25.

First, look up the mx record on

http://www.dnsstuff.com/

Second, from the CLI, open a Telnet session to port 25
i.e. = telnet john@domain.com 25

If it works, you should get an SMTP session on the remote Gateway.

Hope this helps.

Rgds,

John