I recently started using a new domain with office365 exchange online. whenever i send emails to gmail accounts i get the following bounceback:
mx.google.com rejected your message to the following email addresses:
mx.google.com gave this error:
[188.8.131.52 12] Our system has detected that this message is likely unsolicited mail. To reduce the amount of spam sent to Gmail, this message has been blocked. Please visit http://support.google.com/mail/bin/answer.py?hl=en&answer=188131
for more information. j5si4992043pbs.91 - gsmtp
Your message wasn't delivered due to a permission or security issue. It may have been rejected by a moderator, the address may only accept email from certain senders, or another restriction may be preventing delivery.
how can i whitelist my domain with google mail server?