How do I add email sending capabilities?

[Gladfelder]

I was checking the syslog when I noticed that the mail.log and mail.info files had changed. The content is the same in both files but confusing.

Below is the telnet session input to create the message.

Terminal

mail from:<me>@gmail.com
rcpt to:<me>@gmail.com
data
To: <me>@gmail.com
From: <me>@gmail.com
Subject: Hey my first email
This is my first email on debian postfix after installing configuring it.
It was easy.

This is the mail.log

Code:

Feb  1 09:12:56 xbian postfix/sendmail[27602]: warning: inet_protocols: disabling IPv6 name/address support: Address family not supported by protocol
Feb  1 09:12:57 xbian postfix/postdrop[27605]: warning: inet_protocols: disabling IPv6 name/address support: Address family not supported by protocol
Feb  1 09:12:57 xbian postfix/cleanup[27608]: warning: inet_protocols: disabling IPv6 name/address support: Address family not supported by protocol
Feb  1 09:12:57 xbian postfix/trivial-rewrite[27616]: warning: inet_protocols: disabling IPv6 name/address support: Address family not supported by protocol
Feb  1 09:12:57 xbian postfix/cleanup[27608]: 67777ECD4: message-id=<20140201151257.67777ECD4@xbian>
Feb  1 09:12:57 xbian postfix/qmgr[14364]: 67777ECD4: from=<root@xbian.<mydomain>.com>, size=1743, nrcpt=1 (queue active)
Feb  1 09:12:57 xbian postfix/local[27619]: warning: inet_protocols: disabling IPv6 name/address support: Address family not supported by protocol
Feb  1 09:12:57 xbian postfix/local[27619]: 67777ECD4: to=<root@xbian.<mydomain>.com>, orig_to=<root>, relay=local, delay=0.53, delays=0.4/0.11/0/0.03, dsn=2.0.0, status=sent (delivered to mailbox)
Feb  1 09:12:57 xbian postfix/qmgr[14364]: 67777ECD4: removed
Feb  1 09:28:25 xbian postfix/master[14346]: terminating on signal 15

Why is it sending to/from <root@xbian.<mydomain>.com> when I thought I was sending to/from <me>@gmail.com?