I do not understand your question. I configured mailman as a mailing list server using postfix (relayhost) and fetchmail as its interfaces to the internet as described for mailman. BR Marco
----- Reply message ----- From: "Robert Wolfe" <robert.wo...@robertwolfe.org> To: "Marco Stoecker" <ma...@stoecker-family.de> Cc: <postfix-users@postfix.org> Subject: email duplicates Date: Wed, Oct 28, 2015 3:07 PM Why so many hops? Sent from my iPhone > On Oct 28, 2015, at 3:04 AM, Marco Stoecker <ma...@stoecker-family.de> wrote: > > > >> On 10/27/2015 06:10 PM, Bill Cole wrote: >>> On 27 Oct 2015, at 12:40, Marco Stoecker wrote: >>> [...] >>> I do need some assistance, as this is very new for me. >>> Thx in advance. >>> So this is the "Received" header of 5 out of 5 messages. I can't see where >>> the duplication happend :-( >> Maybe this abridgment will help, reducing each to the first & second >> Received headers: >>> message1: >> [...] >>> Received: from mout.web.de ([212.227.15.3]) by mx.kundenserver.de (mxeue002) >>> with ESMTPS (Nemesis) id 0MVE1V-1a1cd42azt-00YP1m for >>> <ak-lei...@waldorfkindergarten-erlangen.de>; Thu, 22 Oct 2015 10:37:47 +0200 >>> Received: from Klamotten ([84.168.195.183]) by smtp.web.de (mrweb003) with >>> ESMTPSA (Nemesis) id 0MTh7A-1Zy14E1g36-00QRsw; Thu, 22 Oct 2015 10:37:47 >>> +0200 >>> message2: >> [...] >>> Received: from mout.web.de ([212.227.15.3]) by mx.kundenserver.de (mxeue002) >>> with ESMTPS (Nemesis) id 0M4zk6-1ajnCX2Rpe-00zFbN for >>> <vorst...@waldorfkindergarten-erlangen.de>; Thu, 22 Oct 2015 10:37:47 +0200 >>> Received: from Klamotten ([84.168.195.183]) by smtp.web.de (mrweb003) with >>> ESMTPSA (Nemesis) id 0MTh7A-1Zy14E1g36-00QRsw; Thu, 22 Oct 2015 10:37:47 >>> +0200 >>> message3: >> [...] >>> Received: from mout.web.de ([212.227.15.3]) by mx.kundenserver.de (mxeue002) >>> with ESMTPS (Nemesis) id 0MIWPn-1ZovKO2jl9-004F6W for >>> <kolleg...@waldorfkindergarten-erlangen.de>; Thu, 22 Oct 2015 10:37:47 +0200 >>> Received: from Klamotten ([84.168.195.183]) by smtp.web.de (mrweb003) with >>> ESMTPSA (Nemesis) id 0MTh7A-1Zy14E1g36-00QRsw; Thu, 22 Oct 2015 10:37:47 >>> +0200 >>> message4: >> [...] >>> Received: from mout.web.de ([212.227.15.3]) by mx.kundenserver.de (mxeue002) >>> with ESMTPS (Nemesis) id 0M1Oy9-1adzmM2xGD-00tS34 for >>> <gruppensprec...@waldorfkindergarten-erlangen.de>; Thu, 22 Oct 2015 10:37:47 >>> +0200 >>> Received: from Klamotten ([84.168.195.183]) by smtp.web.de (mrweb003) with >>> ESMTPSA (Nemesis) id 0MTh7A-1Zy14E1g36-00QRsw; Thu, 22 Oct 2015 10:37:47 >>> +0200 >>> message5: >> [...] >>> Received: from mout.web.de ([212.227.15.3]) by mx.kundenserver.de (mxeue002) >>> with ESMTPS (Nemesis) id 0MKz7Q-1ZpBNb35bE-0006Vb for >>> <beis...@waldorfkindergarten-erlangen.de>; Thu, 22 Oct 2015 10:37:47 +0200 >>> Received: from Klamotten ([84.168.195.183]) by smtp.web.de (mrweb003) with >>> ESMTPSA (Nemesis) id 0MTh7A-1Zy14E1g36-00QRsw; Thu, 22 Oct 2015 10:37:47 >>> +0200 >> In short: a machine using the IP address 84.168.195.183 and claiming >> to have the bogus name 'Klamotten ' passed a single message to a mail >> server calling itself both 'smtp.web.de' and 'mrweb003' for which the >> server used the id '0MTh7A-1Zy14E1g36-00QRsw' and which was then >> passed to to the mail server mx.kundenserver.de by a mail system >> claiming to be mout.web.de *FIVE DIFFERENT TIMES*, each time with one >> of *FIVE DIFFERENT RECIPIENTS* >> This gives the impression that the user of "Klamotten" (apparently a >> DTAG residential customer) addressed that single message to 5 >> different recipients and the *.web.de mail complex split the single >> message into 5 discrete but mostly identical messages (except for the >> ensuing Receives headers) for onward transport. That's inefficient, >> but not formally wrong. It may be that the server mx.kundenserver.de >> refuses to accept multi-recipient messages and so the split was >> imposed upon, rather than being chosen by, the mout.web.de server. > > As I understand now, the mail from the sender (machine Klamotte) is delivered > to the smtp server from web.de which than is delivered to 1und1 > (mx.kundenserver). From there fetchmail is getting it and delivered it to my > postfix server, which than delivered it to mailman. After mailman handled it, > it is than sending to the mailing list recipients vie postfix again. > If postfix already gets 5 messages, than I will check then handover from > fetchmail to postfix and also the message, before it gets to fetchmail. > > BR > Marco
