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Outbound ports

Question / Problem

Which outbound ports do the Exchange Server Toolbox, SmartPOP2Exchange and SpamAssassin need?

Answer / Solution

  • Check for Update
    • TCP and UDP Port 853
    • TCP Port 443
  • ClamAV
    • FreshClam (Signature Updater)
      • TCP Port 53
    • Rsync (SaneSecurity Signature Updater)
      • TCP Port 873
  • SpamAsassin
    • Razor (Regel Updater)
      • TCP Port 2703 and TCP Port 7
    • Querying blacklists (RBLs)
      • TCP and UDP Port 53

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