我想通过发送电子邮件至xxx@m.facebook.com来更新我的Facebook状态。它适用于Thunderbird或webmail。但是使用Linux的mail命令，它不会向xxx@m.facebook.com发送电子邮件，但可以通过电子邮件发送到@ gmail.com和其他人。
如何使用mail或sendmail命令向xxx@m.facebook.com发送电子邮件？
以下是来自mail.log的日志：
Aug 4 04:02:34 s17773461 sm-mta[28533]: s7492YBE028533: from=<root@xxxx>, size=397, class=0, nrcpts=1, msgid=<201408040902.s7492YQJ028532@xxxx>, proto=ESMTP, daemon=MTA-v4, relay=localhost [127.0.0.1]
Aug 4 04:02:34 s17773461 sendmail[28532]: s7492YQJ028532: to=xxx@m.facebook.com, ctladdr=root (0/0), delay=00:00:00, xdelay=00:00:00, mailer=relay, pri=30053, relay=[127.0.0.1] [127.0.0.1], dsn=2.0.0, stat=Sent (s7492YBE028533 Message accepted for delivery)
Aug 4 04:02:34 s17773461 sm-mta[28535]: s7492YBE028533: to=<xxx@star.c10r.facebook.com>, ctladdr=<root@xxxx> (0/0), delay=00:00:00, xdelay=00:00:00, mailer=esmtp, pri=120397, relay=msgin.t.facebook.com. [173.252.113.23], dsn=5.0.0, stat=Service unavailable
Aug 4 04:02:34 s17773461 sm-mta[28535]: s7492YBE028533: s7492YBE028535: DSN: Service unavailable