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            Bug ID: 9074
           Summary: Stop bounces on permanent delivery failure
    Classification: Contribs
           Product: SME Contribs
           Version: 9.0
          Hardware: ---
                OS: ---
            Status: CONFIRMED
          Severity: normal
          Priority: P3
         Component: smeserver-fetchmail
          Assignee: [email protected]
          Reporter: [email protected]
        QA Contact: [email protected]

I hadn't this issue on SME8, only saw it on SME9, so it might affect only
fetchmail version on SME9.

The problem is that the default behaviour of fetchmail is to use "softbounce":
if the SMTP reply with a permanent delivery failure, a bounce is sent to the
original sender, but the mail is *not* deleted from the upstream server. So, on
next fetch, the same error will start over and over. We should disable this by
setting 'set no softbounce'

Another, related problem is that, if RHSBL is enabled and a mail fetched by
fetchmail is refused because of that, qpsmtpd replies with a 550 code (which is
the right thing to do), but by default, fetchmail doesn't consider this as a
spam blocking, and generate a bounce to the sender. Once again, this should be
avoided by adding the antispam 550 configuration

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