Juergen Bachsteffel <juergen(_at_)pass-ag(_dot_)com> writes:
Postix itself is configured not to send emails that begin with an 'i' to
the outside.
I have account like:
ipaul(_at_)test-lokal(_dot_)com
imary(_at_)test-ag(_dot_)com
('i' stands for intern)
Incoming email sould also filtered.
I use this procmail filter.
/etc/promailrc:
:0
* ^TO_i(_dot_)*(_at_)test-ag\(_dot_)com
* !^From:(_dot_)*(_at_)test-ag\(_dot_)com
* !^From:(_dot_)*(_at_)test-lokal\(_dot_)com
/home/filter/iaccounts
It works but there are some emails
which are also catched by this filter during the week.
I dont't see what these emails have in common.
Whats's wrong? Is the filter not precise enough?
Yep. Compare the following two conditions:
* LOGNAME ?? ^^i
"The username being delivered to begins with an 'i'"
* ^TO_i(_dot_)*(_at_)test-ag\(_dot_)com
"A recipient header contains an address beginning
with the letter 'i' and later in the header the
test '@test-ag.com'"
Note that the second condition is applied for _all_ recipients of the
message, not just those whose usernames begin with 'i'. Note also that
there's no real requirement that the 'i' be part of the same address;
that condition will match the header
To: ilya(_at_)somewhere(_dot_)else, bob(_at_)test-ag(_dot_)com
In case you haven't already guesses from the descriptions, you should
be using the LOGNAME based condition. My rule of thumb is that ^TO
and ^TO_ should practically never be used in the /etc/procmailrc file.
Basically the only time you want to use them is in vacation recipies
to see whether the message was explicitly addressed to you and should
therefore prompt a response.
Philip Guenther
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