Introduce a delay into the SMTP transaction

Nirjonadda

• April 22, 2017 09:12

What does safe disabling "Introduce a delay into the SMTP transaction for unknown hosts and messages detected as spam" in "WHM >> Exim Configuration Manager"? Do we have any security issue from RBL block?

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  Infopro

  • April 22, 2017 15:51

  I'm not sure I fully understand your question, but that setting is explained a bit more, here: Exim Configuration Manager - Basic Editor - Documentation - cPanel Documentation This option configures the SMTP receiver to wait a few additional seconds for a connection when it detects spam messages. Typically, legitimate mailing systems will wait past the delay, whereas spammers do not wait past the delay. Note: The system excludes the following remote hosts from the delay: [LIST]

  Neighbor IP addresses in the same netblock

  Loopback addresses

  Trusted Mail Hosts

  Relay Hosts

  Backup MX Hosts

  Skip SMTP Checks Host

  Sender Verify Bypass Hosts

  Greylist Trusted Hosts
  

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  Nirjonadda

  • April 22, 2017 17:56

  I'm not sure I fully understand your question

  
  I am asked that do we have any security issues after disabling "Introduce a delay into the SMTP transaction for unknown hosts and messages detected as spam?

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  cPanelMichael

  • April 24, 2017 17:36

  I am asked that do we have any security issues after disabling "Introduce a delay into the SMTP transaction for unknown hosts and messages detected as spam?

  
  Hello, There are no specific security issues when disabling this option, however it does make the server more vulnerable to SPAM. Thank you.

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