2015-08-26 12:41:54 1ZUdlp-0001TK-9x **-------------------@gmail.com F=<------@---------> R=lookuphost T=remote_smtp H=gmail-smtp-in.l.google.com [173.194.67.26] X=TLSv1.2:ECDHE-RSA-AES128-GCM-SHA256:128 CV=yes: SMTP error from remote mail server after end of data: 550-5.7.1 [-------------------- 12] Our system has detected that this message is\n550-5.7.1 likely unsolicited mail. To reduce the amount of spam sent to Gmail,\n550-5.7.1 this message has been blocked. Please visit\n550 5.7.1
https://support.google.com/mail/answer/188131 for more information. hi7si6124671wjc.65 - gsmtp
2015-08-26 12:41:54 1ZUdlq-0001TU-9u <= <> R=1ZUdlp-0001TN-BQ U=mail P=local S=4712 T="Mail delivery failed: returning message to sender" from <> for --------@---------------
2015-08-26 12:41:54 1ZUdlp-0001TN-BQ Completed