* Noel Jones <postfix-users@postfix.org>: > On 11/28/2012 1:17 PM, Will Yardley wrote: > > [Apologies in advance for the less than complete information below; > > hoping someone may have an idea of what's happening anyway] > > > > I'm having a problem where messages are accepted but then seem to > > generate a mail forwarding loop. It seems to happen a lot with mail from > > a particular spammer. > > There was a discussion earlier this month about some spammer > including a Delivered-To: header in their spam. Postfix local(8) > uses this header to detect loops and will bounce messages with a > Delivered-To: header equal to the current recipient. > > Seems likely this is your problem too. > > There were some suggestions for dealing with it in that discussion, > but there is no particularly good solution -- see archives. The > best solution is to detect the message as spam and reject it before > the Delivered-To: header is a factor.
To verify this, use a header_checks entry like: /^Delivered-To:/ WARN -- [*] sys4 AG http://sys4.de, +49 (89) 30 90 46 64 Franziskanerstraße 15, 81669 München Sitz der Gesellschaft: München, Amtsgericht München: HRB 199263 Vorstand: Patrick Ben Koetter, Axel von der Ohe, Marc Schiffbauer Aufsichtsratsvorsitzender: Joerg Heidrich
