Ports and Communication Requirements on the SendPro C, SendPro+

Products affected:
SendPro® C, SendPro®+ (2H20)
The SendPro C, SendPro+ connection uses these ports and protocols. The system will require access through your network and firewall.

  • All communication is initiated from the system via ports 80 (HTTP) and 443 (TLS)
  • All communications from the system to the back end system are in the form of XML messages.
Ports Port 80 (HTTP)
  • Web Services
  • TeamViewer (remote access software)
Port 443 (TLS)
  • SendPro C, SendPro+ sends requests to refill or audit its PSD (Postal Security Device) when the user requests it or an inspection is required. Audits occur if the PSD inspection date has expired.
  • During initial install, the system will automatically request an Operational Block, from the infrastructure, for the PSD.
  • On PSD replacement the system will automatically request the configuration data for the replacement PSD.
  • Transaction records from the SendPro C, SendPro+ are automatically uploaded when a user message appears (within three days of the mail being generated).
  • O/S updates and Pitney Bowes Application Software and Rates Data updates.
Port 53
  • DNS lookup


IT departments that use a "rules based" method for allowing specific ports to pass traffic on their network for port 53, allow for both UDP and TCP traffic to this port.

Related topic:
Open ports and firewall exceptions

UPDATED:  23 September 2019