On Wednesday, June 2, 2004, 11:39:02 PM, John Fawcett wrote: > From: "Jeff Chan"
>> As I understand it, SpamCopURI only handles "open" redirects where >> the redirected-to site is visible in the original URI. >> >> I'm not sure why/if the yahoo redirectors came out of the list. >> Perhaps Eric Kolve can comment. >> >> "Opaque" redirection sites, which encode or otherwise obscure the >> destination URI, such as tinyurl.com, are not currently handled >> in SpamCopURI (SA 2.63) or urirhsbl (SA 3.0), due to potential >> resource issues. Following such redirections would incur network >> access, timeouts, etc. that would probably be unusable on a mail >> system with significant message volume. > SpamCopURI can resolve both types of redirectors. This is > because (when enabled) it will go out and connect to the web > server for the spamvertized site IF that site is listed as > an open redirector. If spamcopuri gets a 3XX return code > from the web server, this will contain the redirected to url. > (If the url is also an open redirector, then the operation is > repeated up to 4 times to pick up nested chains of > redirectors). > There is nothing specific to this functionality which > would apply to yahoo and not to tinyurl. tinyurl is actually > already included in the sample rules file. Thanks much for the clarification John. Jeff C.
