Block Gmail carbon copy on cPanel

RaPha_Real

• July 27, 2017 01:03

Hi Guys, How can I block gmail carbon copy to cpanel? I don't want my email user to have a carbon copy to their personal gmail account. Its a matter of company policy. I use round cube as their web-mail and don't want them to have a copy of our company emails when they wanted to resign. Appreciate your helps. Thank you.

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  cPanelMichael

  • July 27, 2017 12:09

  Hello, Could you verify how the copy of the email is sent? Is it achieved through a forwarder configured in webmail, or is the sender adding the Google email address to the CC line when sending the email? Thank you.

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  RaPha_Real

  • July 28, 2017 01:30

  Hello, Could you verify how the copy of the email is sent? Is it achieved through a forwarder configured in webmail, or is the sender adding the Google email address to the CC line when sending the email? Thank you.

  
  For example this one yooweb.me/blog/deggertsen/setting-your-cpanel-email-address-gmail I dont want my user do this without my permission.. Thank you.

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  cPanelMichael

  • July 28, 2017 16:19

  Hello, Gmail is essentially acting as the email client in this scenario (it's using POP3/IMAP and SMTP). The email user could do the same thing with any other email client (e.g. Outlook, Thunderbird). The easiest way I can think of to prevent this from working would be to setup a firewall rule that blocks access to the IMAP and POP3 ports from Google's IP ranges. CSF is a useful plugin for managing firewall rules should you want to do that: ConfigServer Security & Firewall (csf) Thank you.

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  RaPha_Real

  • August 01, 2017 03:35

  My boss approve this and I already no issue with this one. But another problem arise, I can't receive Gmail incoming emails I have open port 465-25-995-993-587 etch both in service manager and CSF but still gmail incoming emails cant pass through when csf is enable Take note there's no gmail incoming email trace on tail -f /var/log/exim_mainlog I can only receive gmail emails if I disable csf

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  cPanelMichael

  • August 01, 2017 18:19

  I can only receive gmail emails if I disable csf

  
  Could you confirm if you have blocked any of Google's IP addresses in your firewall rules, and if so, verify how exactly the block is configured? Thank you.

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