> Today I've come across a Sophos PureMesssage server that puts
> "ignore_policy_error" as restriction option:
> 
> smtpd_client_restrictions = 
>         ignore_policy_error,
>         check_policy_service inet:localhost:4466
> 
> I've looked up the postconf man page, but couldn't find that option. Sophos
> OTOH has been quoted by my customer that they don't run a patched Postfix.
> 
> So what is it? Given all of Wietses efforts to create great documentation I
> tend to believe Sophos does provide a patched Postfix.

Well, the naming gives a hint: Sophos patched Postfix to have some
sort of "soft_fail the next restriction" to secure against
"check_policy_service inet:localhost:4466" failing somehow.

This is just speculation.

But I wonder why they would do that: If the policy service FAILS, no
mail goes through and the admins will have a look.

With ignore_policy_error I would thing that Postfix will silently
ignore the error and just deliver the mail.

-- 
Ralf Hildebrandt
  Geschäftsbereich IT | Abteilung Netzwerk
  Charité - Universitätsmedizin Berlin
  Campus Benjamin Franklin
  Hindenburgdamm 30 | D-12203 Berlin
  Tel. +49 30 450 570 155 | Fax: +49 30 450 570 962
  ralf.hildebra...@charite.de | http://www.charite.de
            

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