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*******@hotmail.com.tr
SMTP error from remote mail server after MAIL FROM:<info@yilmazbilisim.org> SIZE=2468:
host mx4.hotmail.com [65.55.37.72]: 550 SC-001 (COL0-MC1-F54) Unfortunately, messages from 5.1**.1*0.*** 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.