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ld276759@student.omsd.net: host aspmx.l.google.com[173.194.193.26] said: 550-5.7.1 This is a closed email system. Messages can not be exchanged with 550 5.7.1 outside email addresses. - gcdp e9e14a558f8ab-3d19e1ffc50si157794695ab.103 - gsmtp (in reply to end of DATA command)