On Fri, Jul 29, 2011 at 2:46 AM, <valdis.kletni...@vt.edu> wrote: > And you might want to fix it, since your users will never get a bounce notice > from any RFC-compliant mailer - even if they *wanted* to know that their mail > wasn't delivered. <> is the RFC-standard way to denote "this mail is a bounce > report or other programmatically generated mail, and if it bounces itself, do > *not* > generate another bounce, as that may start a bounce loop".
Correction: It's a standard way to denote that "this mail is a bounce report." Any other sort of programmatically generated email is supposed to use an email address capable of receiving a reply so that the sender becomes aware that it failed to be delivered. One defense against so-called blowback spam is to refuse bounce reports which do not, somewhere within the message, contain an email address that the bounce recipient recently sent to. Regards, Bill Herrin -- William D. Herrin ................ her...@dirtside.com b...@herrin.us 3005 Crane Dr. ...................... Web: <http://bill.herrin.us/> Falls Church, VA 22042-3004
