dk-filter, postfix, and mailscanner

[Jason Ede]

If you add a footer to  the bottom of the email after it is  signed then surely that invalidates the signature? Also I think some of the extra headers might although not sure on that.

> -----Original Message-----
> From: mailscanner-bounces at lists.mailscanner.info [mailto:mailscanner-
> bounces at lists.mailscanner.info] On Behalf Of Dave Gattis
> Sent: 23 November 2010 18:56
> To: MailScanner discussion
> Subject: RE: dk-filter, postfix, and mailscanner
> 
> Why do you think that MailScanner doesn't break dkim?
> Dave
> 
> Jason Ede wrote:
> > I've been looking at this too and if you've a single instance of
> > postfix then I believe you can't do it as it signs the message before
> > it gets passed to mailscanner and then the mailscanner stuff changes
> > the email invalidating the signature.
> >
> > The solution is to have multiple instances of postfix. The first
> > instance accepts and scans the email using mailscanner and then the
> > email gets passed to  the second instance which does the signing on the
> way out.
> >
> > If you can update to postfix >2.6 then it is much better supported
> > from within postfix and
> > http://www.postfix.org/MULTI_INSTANCE_README.html
> > documents how to do it. We're in process of setting up a system that
> > uses multiple instances and once it's all complete I hope to add what
> > we've learnt to the wiki.
> >
> > Jason
> >
> >> -----Original Message-----
> >> From: mailscanner-bounces at lists.mailscanner.info [mailto:mailscanner-
> >> bounces at lists.mailscanner.info] On Behalf Of Dave Gattis
> >> Sent: 23 November 2010 11:17
> >> To: mailscanner at lists.mailscanner.info
> >> Subject: dk-filter, postfix, and mailscanner
> >>
> >> Hello everyone,
> >> Yahoo is sticking my mail straight in the junk folder, so it looks
> >> like domainkeys is my only hope.  While I was at it, I also installed
> >> dkim, which works perfectly.  Domainkeys is set up too but no matter
> >> what I do, the test always comes back as bad signature.  I've tried
> >> installing domainkeys without dkim and the test still fails.  Has
> >> anyone had any luck with this setup?
> >>
> >> Debian 4.1.2
> >>
> >> Postfix 2.5.5
> >> Mailscanner 4.81
> >> DK-Filter 1.0.0
> >>
> >> Thanks!
> >>
> >> Dave
> >>
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> >>
> >> Before posting, read http://wiki.mailscanner.info/posting
> >>
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> >
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> >
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> >
> 
> 
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> 
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