On Sat, 8 Oct 2011 04:11:41 -0400
Phil Pennock wrote:
> On 2011-10-08 at 09:59 +0300, Nikita Koshikov wrote:
> > Hello list,
> >
> > I have a question regarding next exim 4.77 update and "match" clutching.
> > Reading Phil's announce letter it's a bit unclear to me what will work and
> > how correctly remake current configs if it won't work.
> >
> > Few examples:
> >
> > 1)
> > {match_ip{$sender_host_address}{iplsearch;EXIM_ROOT/local/bad_auth_hosts}}
>
> This will still work.
>
> > Lookups are now not allowed, so should I define new hostlist and make
> > iplsearch there or maybe exist some better way?
> > >{match_ip{$sender_host_address}{+new_hostlist}} ?
>
> Lookups are still allowed. The change is that the second part will not
> be expanded. There is no "$" sign anywhere in
> "iplsearch;EXIM_ROOT/local/bad_auth_hosts". There is no change in
> behaviour that affects you here.
>
> > 2)
> > {match_ip{$sender_helo_name}{@[]}}
> > @[] - if I'm correct - this is internal variable to exim - will it be
> > allowed ?
>
> Lookups still work, list matches still work, you're using match_ip{}{}
> correctly, as it was designed to be used, and this example will still
> work.
>
> > 3)
> > ${if !match{$sender_helo_name}{\\.}}
> > This should work - pure regex, Am I right ?
>
> Correct. match{}{} is unchanged. For clarity, you might want:
> ${if !match{$sender_helo_name}{\N\.\N}}
>
> so that you're not into leaning toothpick syndrome.
>
> > 4)
> > Final one
> > ${if forany\
> > {<,\
> >
> > ${lookup{$sender_host_address}iplsearch{EXIM_ROOT/local/allow_ip_senders}}\
> > }\
> > {match{${lc:$sender_address}}{$item}}\
> > }
>
> match{}{} is unchanged. ${lookup...} is unchanged. forany{}{} is
> unchanged.
>
> > allow_ip_senders have format like this:
> > IP Sender
> > 1.1.1.1 [email protected], services-.*@example.net
> >
> > What is the right way to make such functionality in upcoming exim release?
>
> This is correct and will still work.
>
> Every part of your configuration is correct and safe, to the best of my
> knowledge. None of the parts which you have cited here will be broken
> by 4.77. Your configuration is exactly the sort of working
> configuration which we're trying to preserve.
>
> The only backwards-incompatible change is that for expansion conditions
> match_address, match_domain, match_ip and match_local_part, the second
> parameter is not subject to string expansion as part of reading it.
>
> This means, that for those four conditions, and only those four, a "$"
> somewhere in the second parameter will be treated as an ordinary
> character. When the time comes to perform the lookup, if it's
> referencing a named list and the named list definition uses $expansions
> then those will still work as before.
>
> Does this make things any clearer?
>
> -Phil
Thanks a lot for clarification on this, now it seems clear to me how my servers
will begin to working after update.
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