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lw50637@students.hcde.org: host ASPMX.L.GOOGLE.com[2607:f8b0:4023:1407::1b] said: 550-5.7.1 Your email was rejected because your domain is not approved for 550 5.7.1 communication with Hamilton County Gmail accounts. - gcdp o3-20020a0cecc3000000b006592a95dde8si2705954qvq.87 - gsmtp (in reply to end of DATA command)