Knowledgebase

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

SpamAssassin

Razor (Regel Updater)

TCP Port 2703 and TCP Port 7

Querying blacklists (RBLs)

TCP and UDP Port 53

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