At work, email is king. When the system goes down, it's like some people's life has just stopped. Another problem I have at work, more often than I'd like, is being accussed of being the "problem" when emails can't be received by another company.

The other company, of course, just gives us the brush, but when I give them the technically information, that's when they pull their head in and fix the problem at their end.

So, how do you get this technical information ?

You run SMTP commands on their Mail Server.

1.	telnet mail.targetdomain.com 25
2.	HELO mail.sourcedomain.com
	250 mail.sourcedomain.com Hello mail.sourcedomain.com [IP Address], pleased to meet you
3.	MAIL FROM: [email protected]
	250 2.1.0 [email protected]... Sender ok
3.	RCPT TO: [email protected]
	250 2.1.0 [email protected]... Recipient ok
4.	DATA
5.	Subject: Enter Your Subject Line Here
6.	To end the message, Enter a single "." (fullstop) on a line of it's own
7.	QUIT
	221 2.0.0 mail.targetdomain.com closing connection Connection closed by foreign host.