| Test SMTP Configuration Using Telnet |
Mindwatering Incorporated
Tripp W Black on 07/06/2009 at 09:20 AM |
Category: Domino Server Issues Troubleshooting
Mail Routing
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To test if outgoing mail from a client can reach a Mindwatering, or any other mail server, you can use Telnet.
Use the following command:
telnet server.mindwatering.com 25
(standard smtp port is 25)
If the connection times out, the port is not open somewhere. If you get an opening message from the server, then you made it.
(The message varies.)
Here is a sample telnet test:
telnet mx1.mindwatering.com 25
220 mx1.mindwatering.com ESMTP Postfix
helo tripp.mindwatering.local
250 mx1.mindwatering.com
mail from: tblack@mindwatering.com
250 2.1.0 Ok
rcpt to: tblack@mindwatering.com
250 2.1.5 Ok
data
354 End data with <CR><LF>.<CR><LF>
subject: test
.
250 2.0.0 Ok: queued as AEC8A27DF3
quit
250 2.0.0 Bye.
Connection to host lost.
Notes:
If local echo is off, turn it on. Otherwise you are typing blind.
If you mess up while typing and are using the Telnet DOS program, you have to re-enter the command. You cannot backspace successfully as you are actually sending the backspace characters to the server, too. The server will complain that you sent it invalid data and may hang up with you.
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