Google Rejecting our Emails

Hi Guys, I hope you can help me.



I'm getting this error below every time I send an email to a google hosted email. How did you resolved this kind of Issue? we are using Exchange 2013. Recently we moved our VM to a new Data Center, replaced our public IP and then this happened.

-this issue is specifically only to google hosted emails because we can send email to other email domains.

-sending/receiving an email to gmaildotcom has no problem 



mx.googledotcom rejected your message to the following email addresses:
'user@domaindotcom' (user@userdotcom)
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.

mx.google.com gave this error:
[x.x.x.x 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. ***"Microsoft not allowing me to send with links -newbie user here "****. j5si14415577plk.229 - gsmtp 
I have reported to Google to unblock on June 31, 2019.

thanks,

GT