I have setup an exchange server 2013 cu7 on Windows 2012 R2 Standard.
I have seperate AD server running on the same OS mentioned above.
My Exchange installation was fine but aster installation i couldn't send and receive email from outside. Internal is working fine.
When i send to couple of external email ids like gmail i am getting error like
mx.google.com rejected your message to the following email addresses:
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:
[18.104.22.168 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. qu4si7170968pbb.17 - gsmtp
Couple of emails are qued up and not sending.
Also when i send email to my exchange user i am not receiving.
I tried Microsoft remote connectivty analyser and i am getting the error.
Testing TCP port 25 on host mail.atomoptions.ae to ensure it's listening and open.
The specified port is either blocked, not listening, or not producing the expected response.
I am using a fortigate firewall and using fortigate dyndns.
The domain is from 1and1 and i created the mx recored and it is pointing to the firewall.
I also done the port forwarding also.
Please help me in resolving the issue.