I got my Virtual machine running a LAMP server and it's supposed to send my just for few things: account activation, verification.
I noticed that emails are not being sent so I looked at mail.log file and actually most common ISPs (Outlook & Gmail for example) say that IP is on their blacklist. How come that Microsoft doesn't check and repair this kind of issues?
Jan 4 23:19:04 forumtalks postfix/smtp[1893]: D967D21A67: to=<___>, relay=gmail-smtp-in.l.google.com[64.233.166.27]:25, delay=0.97, delays=0.05/0/0.31/0.6, dsn=5.7.1, status=bounced (host gmail-smtp-in.l.google.com[64.233.166.27] said: 550-5.7.1 [MYIP 12] Our system has detected that this message is 550-5.7.1 likely unsolicited mail. To reduce the amount of spam sent to Gmail, 550-5.7.1 this message has been blocked. Please visit 550-5.7.1 http://support.google.com/mail/bin/answer.py?hl=en&answer=188131 for 550 5.7.1 more information. ep8si12925337wib.87 - gsmtp (in reply to end of DATA command))
Jan 4 23:20:22 forumtalks postfix/smtp[2224]: 314B721A6C: to=<____>, relay=mx1.hotmail.com[65.55.37.72]:25, delay=0.85, delays=0.26/0/0.44/0.14, dsn=5.0.0, status=bounced (host mx1.hotmail.com[65.55.37.72] said: 550 OU-002 (COL004-MC1F53) Unfortunately, messages from MYIP weren't sent. Please contact your Internet service provider since part of their network is on our block list. You can also refer your provider to http://mail.live.com/mail/troubleshooting.aspx#errors. (in reply to MAIL FROM command))
Which solution may apply to my problem?