Re: [Exim] [cyrus] Exim callots and Cyrus (FYI)

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著者: Tor Slettnes
日付:  
To: Andrzej Filip, exim-users
題目: Re: [Exim] [cyrus] Exim callots and Cyrus (FYI)
On Tue, 2004-06-01 at 11:10, Andrzej Filip wrote:
> Tor Slettnes wrote:
> >     require_files = /usr/sbin/mbpath
> >     condition     = ${run {/usr/sbin/mbpath -q -s user.${lc:$local_part}}{1}{0}}


> I think that callouts are "less costly" than executing an external program.


True. It is however possible (but uglier) to perform a less costly
version of the above:

     require_files = ${lc:/var/spool/cyrus/mail/${substr_0_1:$local_part}/user/$local_part}


In this example, user "foo"'s mailbox is in /var/spool/cyrus/mail/f/user/foo.

> I designed my solution specially for supporting cyrus virtual domains so it is
> not best fit for "local transport" replacement.


Point taken.

> BTW Is there any chance to make exim provide a few simple "built in" filters ?
> [e.g. to strip some chars (\0) ]


Well, I tried using PCRE in an ACL (by way of Exiscan-ACL), akin to:

    deny message = Your message contains invalid characters
         regex   = \\000


(And various permutations, using [[^::print::]], etc...). However, it
seems that the PCRE library stops matching at the first occurence of a
NUL character in the string to be matched. The "pcretest" utility seems
to confirm this.

-tor