telnet hostname 25
mail from: email@example.com
rcpt to: firstname.lastname@example.org
enter message, complete with to:, from:, and subject: .... finish with a "." on a line by itself
telnet hostname 80
GET | HEAD [* | /dirname/filename] HTTP/1.0
This one is rather useful in determining what machine actually serves as
the mail relay for a domain.
Yes, I know that I could do this with dig....but hey, I'm old fashioned that way....
set query=mx | hinfo # MX returns the mail records, hinfo returns the host info record