Sending mail through sendmail
i tried sending emails through PHP but it did not work. So i checked if i could send emails via sendmail and i got the following error. Is there anything i could do about?
"Unfortunately, messages from xxx.xxx.xx.xx (my server IP at digital ocean) 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."