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unable to send email on gmail

Posted: Fri Jul 19, 2019 7:02 am
by fayaz
hi team

i have zimbra open source i have change the server ip .i have also check my server is not black list as well as my ip . email services are working fine expect on gmail users. can anyone suggest me .


This is the mail system at host

I'm sorry to have to inform you that your message could not
be delivered to one or more recipients. It's attached below.

For further assistance, please send mail to postmaster.

If you do so, please include this problem report. You can
delete your own text from the attached returned message.

The mail system

<>: host[] said:
550-5.7.1 [ 12] Our system has detected that this
message is 550-5.7.1 likely unsolicited mail. To reduce the amount of spam
sent to Gmail, 550-5.7.1 this message has been blocked. Please visit
550-5.7.1 ... ssageError 550
5.7.1 for more information. w84si25792421wmg.139 - gsmtp (in reply to end
of DATA command)