Prevention from backscatter on cPanel server

backscattering

backscatter

Simple step to stop backscatter on cPanel server

To prevent backscatter you have to done following modifications:

  • Apache SpamAssassin™: bounce spam score threshold has to be set to “No bouncing by spam score default”
  • Enable Greylisting
  • Exim – Sender Verification Callouts should be disabled
  • Exim – Allow DKIM verification for incoming messages should be enabled
  • Exim – Allow DKIM verification for incoming messages should be enabled
  • Exim – Reject DKIM failures should be enabled
  • Initial default/catch-all forwarder destination should be set to Blackhole

This can help prevent the SPAM from reaching your server, and thus reduces the bounce messages.

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