Pine/Mail Unix Help

Question

How come I can send mail to gmail, hotmail and so on but I can't receive mail when they reply?
[email protected]
^^ whats what the e-mail looks like anyone know how to fix this?
Thank you so much..
'mail [email protected]'
Hit control 'd' to send.
Just in case you do not understand what Im talking about..

Answer 1

Another way.
cmcust3-102:~ andya$ mail andya
Subject: test
~h
To: andya
Subject: test
Cc:
Bcc:
(continue)
~?
The following ~ escapes are defined:
~? Print this message
~~ Quote a single tilde
~. Simulate end-of-file on input
~A Equivalent to: ~i Sign
~a Equivalent to: ~i sign
~b users Add users to Bcc list
~c users Add users to Cc list
~C Dump core
~d Read in dead.letter
~e Edit the message buffer
~f messages Read in messages
~F messages Same as ~f, but keep all header lines
~h Prompt for Subject and To, Cc, and Bcc lists
~i name Insert the value of the named variable
~m messages Read in messages, right shifted by a tab
~M messages Same as ~m, but keep all header lines
~p Print the message buffer
~q Quit, save partial message in dead.letter
~r file Read a file into the message buffer
~r !command Insert the output of the command
~< file Same as ~r
~< !command Same as ~r
~R address Set Reply-to to address
~s subject Set Subject to subject
~t users Add users to the To list
~v Invoke display editor on message
~w file Write message onto file
~x Quit, do not save to dead.letter
~! command Invoke the shell
~| command Pipe the message through the command
~^ command Same as ~|
~_ mail-cmd Perform the command-level request
~: mail-cmd Same as ~_
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