Emails not delivering only to gmail user accounts

dpika23

• July 07, 2014 05:33

CLOUDLINUX 6.5 x86_64 standard WHM 11.42.1 (build 16) cPanel Version 11.42.1 (build 16) Apache version 2.2.27 Kernel version 2.6.32-531.1.2.lve1.2.54.el6.x86_64 On my linux server, I can't send email only to gmail/google apps users. All emails sent from this server is bouncing back with an error: For gmail.com users, getting below error: my-gmail-account@gmail.com retry time not reached for any host after a long failure period
Google apps users, getting bounce back email with below error message: my-google-apps-email-account@gmail.com SMTP error from remote mail server after RCPT TO:: host us2.mx3.mailhostbox.com [208.91.199.226]: 550-5.1.1 : Recipient address rejected: User unknown in virtual alias table 550 5.1.1 Please see http://support.mailhostbox.com/email-administrators-guide/error-codes for explanation of the problem.
Got below error from error log on the server: 2014-07-07 19:12:51 H=(mail.my-domain-name.com) [127.0.0.1]:44702 Warning: Sender rate 7.1 / 1h 2014-07-07 19:12:51 1X44yh-003BGU-NF <= test@my-domain-name.com H=(mail.my-domain-name.com) [127.0.0.1]:44702 P=esmtpa A=dovecot_login:test@my-domain-name.com S=806 id=c2713bba05c580253988a5bdef57ed5a.squirrel@mail.my-domain-name.com T="Test mail to Gmail" for my-gmail-account@gmail.com 2014-07-07 19:12:51 SMTP connection from (mail.my-domain-name.com) [127.0.0.1]:44702 closed by QUIT 2014-07-07 19:12:51 cwd=/var/spool/exim 3 args: /usr/sbin/exim -Mc 1X44yh-003BGU-NF 2014-07-07 19:12:51 1X44yh-003BGU-NF SMTP connection outbound 1404724371 1X44yh-003BGU-NF my-domain-name.com my-gmail-account@gmail.com
Also when we stop firewall on the server, it successfully delivers email to gmail and google apps. Can somebody help me to find exact reason behind this issue ? Thanks,

• 

  SS-Maddy

  • July 08, 2014 06:06

  Please ensure that your firewall allows connections to ports 25, 465

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  dpika23

  • July 08, 2014 12:03

  TCP_IN port 25 and 465 are already enabled. Also when we stop firewall on the server, it successfully delivers email to google apps user account, but not to gmail user accounts.

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