usefor-article-09 February 2003

5.6.5.  Suggested Verification Methods

   It is preferable to verify the claimed path-identity against the
   source than to make routine use of the '?' path-delimiter, with
   consequential wasteful double-entry Path additions.

   If the incoming article arrives through some TCP/IP protocol such as
   NNTP, the IP address of the source will be known, and will likely
   already have been checked against a list of known FQDNs, IP
   addresses, or other registered aliases that the receiving site has
   agreed to peer with.

   Since the source host may have several IP addresses, checking the
   claimed FQDN or IP address against the source IP, or finding a
   suitable FQDN to report with a '?' path-delimiter, may involve
   several DNS lookups, following CNAME chains as required. Note that
   any reverse DNS lookup that is involved needs to be confirmed by a
   forward one.

   If the incoming article arrives through some other protocol, such as
   UUCP, that protocol MUST include a means of verifying the source
   site. In UUCP implementations, commonly each incoming connection has
   a unique login name and password, and that login name (or some alias
   registered for it) would be expected as the path-identity.

--- ../usefor-article-08/Suggested_Verification_Methods.out          August 2002
+++ ../usefor-article-09/Suggested_Verification_Methods.out          February 2003