On Wed, 2004-07-07 at 19:33, Jason 'XenoPhage' Frisvold wrote: > On Wed, 2004-07-07 at 13:32, Lars E. D. Jensen wrote: > > Hi list > > > > A scenario which happens very often on my server. > > > > 1. A spammer sends to a non-existent user on my mailserver > > 2. My mailserver answers back to the sender (which is also a > > non-existent user on another mailserver) > > 3. The foreign mailserver answers back to my mailservers admin > > e-mailaddress, that the user is non-existent > > 4. Message double bounces between the two mailservers. > > 5. Message failure is sent to admin e-mailaddress on my mailserver. > > > > Question: > > > > Can the chk-user patch avoid these double bounces ? > > An emphatic YES! The chkusr patch is extremely good at preventing most > of these situations... :) > > > Or is there some other way of avoiding these unnecessary bounces? > > > > I haven't installed chk-user patch yet in production. > > > > > > Thanks > > > > Med venlig hilsen / Best regards > > > > Lars E. D. Jensen [EMAIL PROTECTED]
Jason is right, chkusr patch will end those bounces. And also will save you bandwith and processing time since it stops those mails right at SMTP level. You'll find something like this on the smtpd logs: 550 sorry, no mailbox here by that name (#5.1.1 - chkusr)
