On 8/10/2007 at 11:55 AM, "Patrick W. Gilmore" <patrick@ianai.net> wrote:
On Aug 10, 2007, at 12:46 PM, John Levine wrote:
Very interesting. We've all heard and probably all passed along that little bromide at one time or another. Is it possible that at one time it was true (even possibly for AOL) but with the rise of CDNs, policies of not
honoring TTL's have fallen by the wayside?
I think you'll still see it in spam zombies, some of which have the
DNS info pre-loaded into them in order to avoid split-horizon anti-spam techniques.
Not much we can do about that until we get sufficient backbone to deal with the zombie problem and its software enablers.
Actually, I think the fact Zombies do not honor TTLs is a feature. :)
Fast-flux my MX records to avoid spam? Throw the spammers' technology back at 'em! I changed some MX records in mid-July for a domain. Spam was still flowing into the old MX hosts until I closed the firewall 25/tcp holes just today. Now just logging those zombies still banging on the gates. -- Crist J. Clark crist.clark@globalstar.com Globalstar Communications (408) 933-4387 B¼information contained in this e-mail message is confidential, intended only for the use of the individual or entity named above. If the reader of this e-mail is not the intended recipient, or the employee or agent responsible to deliver it to the intended recipient, you are hereby notified that any review, dissemination, distribution or copying of this communication is strictly prohibited. If you have received this e-mail in error, please contact postmaster@globalstar.com