fred inklaar opslaginklaarnet op 12092002 0035 schreef ellen clary ellendgicom third possibility instead returning 550 code indicating youre spammer fake 511 response saying mailbox exist would hopes spammers actually remove names reported nonexistent lists know slim hope even lower incidence dont guarantee quite spamtraps nowadays operate 5nning 6 months hope getting legit mailers remove bouncing addrs lists 6 months spamtrap incoming mail addrs unfortunately lot legit mailers dont bother cleaning lists either spammers dont check reply codes send many mails system hold without checking confirmation trick lower spam reception dicussed postfix mailing list time ago answer incoming mail 4xx temporary error code offered first time accept second time apparently massemailers dont even try deliver second time sfnet email sponsored bythinkgeek welcome geek heaven httpthinkgeekcomsf _______________________________________________ spamassassintalk mailing list spamassassintalklistssourceforgenet httpslistssourceforgenetlistslistinfospamassassintalk thu 12 sep 2002 205028 0200 satalk reject blackhole fake nouser