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