title: OS X sending mail on command line
body: <p>I'm a mac user. I see that I can send mails on my command line with <strong>mail</strong> command. However I can't see when and how it was configured. </p>
  
  <p>I checked postfix and sendmail configs but it didn't help. </p>
  
  <p>If I check var/log/mail.log , I can see that mails are relayed to gmail smtp server : gmail-smtp-in.l.google.com</p>
  
  <p>So, where is my mail configuration?</p>