Can receive email but not send to gmail

I know there many topics about the same problem, but i m sure that i have correctly set PTR, Blacklist etc.. so i can receive emails from any sender, also can send email to any one except Gmail, Yahoo, Live.. There no error reporting using intodns.com, but mxtoolbox.com show :

MX : No DMARC Record found.
Test Mail server : Reverse DNS does not match SMTP Banner.

This is my log file.. Sending Email using cPanel WebMail :

2018-02-10 18:53:24 SMTP connection from [::1]:59550 (TCP/IP connection count = 1)
2018-02-10 18:53:24 1ekaH6-0003td-90 <= test@mydomain1.com H=(www.mydomain2.com) [::1]:59550 P=esmtpa A=dovecot_login:test@mydomain1.com S=583 id=5189fc8cadce1423f95c6ca726b78e67@mydomain1.com T="TITLEEEEEEE1" for mygmail@gmail.com
2018-02-10 18:53:24 SMTP connection from (www.mydomain2.com) [::1]:59550 closed by QUIT
2018-02-10 18:53:24 cwd=/var/spool/exim 3 args: /usr/sbin/exim -Mc 1ekaH6-0003td-90
2018-02-10 18:53:24 1ekaH6-0003td-90 Sender identification U=mydomain1 D=mydomain1.com S=test@mydomain1.com
2018-02-10 18:53:24 1ekaH6-0003td-90 SMTP connection outbound 1518288804 1ekaH6-0003td-90 mydomain1.com mygmail@gmail.com
2018-02-10 18:56:39 SMTP connection from [127.0.0.1]:40418 (TCP/IP connection count = 1)
2018-02-10 18:56:39 SMTP connection from (localhost) [127.0.0.1]:40418 closed by QUIT
2018-02-10 19:01:41 SMTP connection from [127.0.0.1]:40512 (TCP/IP connection count = 1)
2018-02-10 19:01:41 SMTP connection from (localhost) [127.0.0.1]:40512 closed by QUIT
2018-02-10 19:06:42 SMTP connection from [127.0.0.1]:40640 (TCP/IP connection count = 1)
2018-02-10 19:06:42 SMTP connection from (localhost) [127.0.0.1]:40640 closed by QUIT

Sending Email using Thunderbrid Client :

2018-02-10 19:11:41 SMTP connection from [My_Public_IP]:34996 (TCP/IP connection count = 1)
2018-02-10 19:11:41 no host name found for IP address My_Public_IP
2018-02-10 19:11:42 1ekaYo-00047P-O0 <= contact@mydomain3.com H=([192.168.1.3]) [My_Public_IP]:34996 P=esmtpsa X=TLSv1.2:ECDHE-RSA-AES128-GCM-SHA256:128 CV=no A=dovecot_plain:contact@mydomain3.com S=826 id=6f7063a3-42cb-cec9-7cf6-1d2c83109216@mydomain3.com T="TTTTTTTT2222" for mygmail@gmail.com
2018-02-10 19:11:42 cwd=/var/spool/exim 3 args: /usr/sbin/exim -Mc 1ekaYo-00047P-O0
2018-02-10 19:11:42 1ekaYo-00047P-O0 Sender identification U=mydomain3 D=mydomain3.com S=contact@mydomain3.com
2018-02-10 19:11:42 1ekaYo-00047P-O0 SMTP connection outbound 1518289902 1ekaYo-00047P-O0 mydomain3.com mygmail@gmail.com
2018-02-10 19:11:43 SMTP connection from ([192.168.1.3]) [My_Public_IP]:34996 closed by QUIT
2018-02-10 19:11:43 SMTP connection from [127.0.0.1]:40710 (TCP/IP connection count = 1)
2018-02-10 19:11:43 SMTP connection from (localhost) [127.0.0.1]:40710 closed by QUIT

My real Server IP :REMOVED (Google Cloud). Thank you,

saifcoder

February 12, 2018 10:29

i still can't send emails.. also all my customers, i don't know if this problem is in cPanel level (server) or Google Cloud level (firewall, external dns..)

February 13, 2018 20:32

finally, i leave Google Cloud, because its not ideal for Web Servers. The problem was Google Cloud block SMTP port outbound traffic.

cPanelMichael

February 13, 2018 20:43

Hello, I'm glad to see you were able to determine the cause of the issue. Thank you for sharing the outcome.

Can receive email but not send to gmail

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