Adding warning message to external emails originating outside the server

I have a dedicated cPanel server and would like to setup an external e-mail disclaimer transport rule or filter that will add a line of text in the body of every incoming email messages that is not originating from the local server. Has anyone had the opportunity to setup something like this? If so can you provide a link where I can find more information on this topic. I have tried searching for this topic and found ways to get it done on other mail servers but not with Exim. I found this bit of information below but it seems to be for outgoing messages rather than incoming. Any information would be greatly appreciated. Thanks

remote_smtp_filter:
  driver = smtp
  transport_filter = /your/filter/command


dnslookup:
  driver = dnslookup
  domains = ! +local_domains
  transport = ${if eq {$sender_address_domain}{your.domain}\
              {remote_smtp_filter}{remote_smtp}}
  ignore_target_hosts = 127.0.0.0/8
  no_more

cPanelMichael

February 18, 2019 18:14

Hello @aeroweb, I don't have a specific example to offer for this type of custom configuration, but the Exim-User's mailing list is often a good resource when seeking out custom configuration examples: Exim-users Note that it's possible modifying a message's body violates RFC guidelines, so that's something you consider as well. If you require help from a third-party system administrator, we provide a list of companies offering system administration services on the link below: System Administration Services | cPanel Forums Thank you.

Soporte Sysout

April 30, 2020 09:40

Hello, I also want to set it up, did you find the way to do it?

Adding warning message to external emails originating outside the server

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