when I type 'cat /var/spool/mail/$myUserName', I found something seems
useful:
SMTP error from remote mail server after end of data:
host
gmail-smtp-in.l.google.com [74.125.25.26]:
550-5.7.1 [MY IP ADDR] Our system has detected an unusual rate of
550-5.7.1 unsolicited mail originating from your IP address. To protect our
550-5.7.1 users from spam, mail sent from your IP address has been blocked.
550-5.7.1 Please visit
http://www.google.com/mail/help/bulk_mail.html to
review
550 5.7.1 our Bulk Email Senders Guidelines. xr1si11727041pbc.309 - gsmtp
what should I do to fix it? Does adding a SPF record work?