Zeryk Posted August 3, 2017 Share Posted August 3, 2017 I cant send e-mail to customers from BO Customer service. Im getting return failure with this: host gmail-smtp-in.l.google.com [2a00:1450:400c:c06::1b] SMTP error from remote mail server after end of data: 550-5.7.1 Unauthenticated email from yahoo.com is not accepted due to domain's 550-5.7.1 DMARC policy. Please contact the administrator of yahoo.com domain if 550-5.7.1 this was a legitimate mail. Please visit 550-5.7.1 https://support.google.com/mail/answer/2451690 to learn about the 550 5.7.1 DMARC initiative. m128si1400662wmd.77 - gsmtpReporting-MTA: dns; www21 But Im not using the yahoo , where is that come from? Im using email from my web server ( provider ) and Im sure they dont have any relation to yahoo. Anybody idea how to fix it? Thanks Link to comment Share on other sites More sharing options...
Scully Posted August 3, 2017 Share Posted August 3, 2017 The mail log from your server would probably tell us more. Can you post extracts from the log? Link to comment Share on other sites More sharing options...
Zeryk Posted August 11, 2017 Author Share Posted August 11, 2017 Problem solved, Thanks Link to comment Share on other sites More sharing options...
Scully Posted August 11, 2017 Share Posted August 11, 2017 @Zeryk - maybe you want you share your findings and help others with similar problems? Link to comment Share on other sites More sharing options...
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