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Re: How to limit the time/number of messages an smtp authenticated session may last

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  • Dennis Guhl
    On Fri, Jul 27, 2012 at 01:55:33PM +0200, Christian Rohmann wrote: [..] ... There are no such controls for smtpd (unfortunately). ... Recently I saw a solution
    Message 1 of 6 , Jul 27, 2012
      On Fri, Jul 27, 2012 at 01:55:33PM +0200, Christian Rohmann wrote:

      [..]

      > I know postfix has quite a few options to configure the connection reuse
      > behavior as client, using the "smtp_connection_cache_"-options, but how
      > would I approach my problem with postfix being an smtp server and a long
      > lasting smtp authenticated session.

      There are no such controls for smtpd (unfortunately).

      > I could think of a few techniques to find and tear down such unwanted
      > connections. But I hope that maybe I did miss some global setting in
      > postfix of how long a single smtp session may last, regardless of what
      > the client (successfully) does with it. Especially since postfix as smtp
      > client has no many options for these kind of issues.

      Recently I saw a solution based on postfwd exactly for this case. They
      check the sasl_username to decide if the mail gets blocked. The rules
      are updated and loaded automatically.

      Dennis
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