With certain versions
of Windows XP the SMTP service is enabled
by default. Often this service is used
without your knowledge or consent by
spammers to forward emails. Help to
prevent spam from being sent from your
computer by using BrowseControl's port
blocking feature. You may choose to block
protocols from a known list of services
such as HTTP, FTP, SMTP and POP3 or you
may also wish to block by port for less
known protocols.