4.0 Message Delivery to and from the Internet

Section 4.1, TCP/IP Link: Outbound Transfer to the Internet Successful

Section 4.2, TCP/IP Link: Outbound Transfer to the Internet Delayed or Unsuccessful

Section 4.3, Mapped/UNC Link: Outbound Transfer to the Internet Successful

Section 4.4, Mapped/UNC Link: Outbound Transfer to the Internet Delayed or Unsuccessful

Section 4.5, TCP/IP Link: Inbound Transfer from the Internet Successful

Section 4.6, Mapped/UNC Link: Inbound Transfer from the Internet Successful