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Telnet Tips And Tricks


Tips for using Telnet on Gnu Linux (may apply to windows)
How to quit telnet?

Use QUIT in caps lock to quick. quit in lowercase will not work

CTRL-C and CTRL-Z on linux will not work. Again, use QUIT.

How to check or test sendmail?

To test to see if your sendmail is working, type in either of the following lines: 

 telnet yourdomain 25
 telnet localhost 25
 telnet 127.0.0.1 25
Then once you are in the telnet, type: 
 HELO yourdomain
 MAIL FROM: user1@domain1 
 RCPT TO: user2@domain2
Now type in 
 DATA
You should get a response back such as: 
 354 Enter mail, end with "." on a line by itself
Type in something and end everything with a dot on the last line, then hit enter. Then check your email for new messages.

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