A simple change to update-exim4.conf allows the use of dsearch (and others)
in dc_other_hostnames:

diff /usr/sbin/update-exim4.conf.orig. /usr/sbin/update-exim4.conf
127c127
<       sed -e 'sÄ[;: ]*$ÄÄ' -e 'sÄ *ÄÄ' -e 'sÄ;Ä:Äg' )"
---

With this change "dc_other_hosts=host1;dsearch=/etc/exim4/virtual" works as
expected (although maybe there's a better character than "=" as there's
already one on the line)

While it does seem a bit convoluted - changing semi-colons to colons and
then some other character to semi-colons - I think the benefit of having the
feature far outweighs the wierdness.

Toby

severity #418910 wishlist
tags #418910 wontfix
thanks

I do not plan to make update-exim4.conf any more complicated to allow
something that has never been supported.

Especially not at this time where people will have to live without
this "feature" for the etch lifetime.

Sorry.

Greetings
Marc

Hi Marc,

Thanks for you prompt reply (and heaps more thanks for maintaining the
package in the first place).

While I respect your decision as the maintainer, and am not going to make a
big deal out of it as I'll just make the change myself, I will ask you to
reconsider for the following reasons:

1. Using dsearch in the domains_list is widespread and thus this issue
affects a lot of people
2. The code change is very simple, and is very unlikely to cause more issues
than it fixes
3. You say it's "never been supported" but exim has supported dsearch in the
domains_list for a very long time (and appears to have been broken in Debian
when dc_other_hostnames was introduced)
4. All the "exim virtual hosts" guides I found on Google use this method, so
first-timers will be confused
5. You say its "more complication", but for those that don't need it there
is no complication - they just enter hostnames as they do now.
6. For those that use it, it will be simpler than having to maintain the
list manually.

I hope you can see that the fix will
a) only take a few minutes of your time, but benefit a large number of
people
b) restore standard functionality that is supported in the upstream exim and
previous Debian versions
c) make managing virtual domains on exim server simpler without complicating
other setups

If after considering all this, you still decide not to fix the bug then I
will just have to trust your judgement.

Toby

----- Original Message ----- 
From: "Marc Haber" <mh+debian-packages@zugschlus.de>
To: "Toby Chamberlain" <tjchamberlain@hotmail.com>; <418910@bugs.debian.org>
Cc: <392831@bugs.debian.org>

The domain lists in update-exim4.conf.conf have always been documented
as "a list of domains". Using dsearch-expessions there is not "a list
of domains", hence out of spec.

The code is already complex enough. Every new magic built into the
regular expressions is bound to break other people's tricks, and then
these will demand their own personal change in the packaging. This
doesn't scale.

update-exim4.conf.conf has nothing to do with exim configuration. It
is a configuration file for the program that generates Debian's exim
configuration. If I knew that people were using it to funnel complex
exim queries into the configuration, update-exim4.conf would have made
proper input sanitazion.

Using HOWTOs found on the Internet without understanding what one does
is harmful. Additionally, update-exim4.conf gives a quite clear error
message, which has especially introuced for HOWTO users.

It is a complication for the people who maintain the code. I care
about _these_ people.

It is not necessary to maintain the list manually. Just put it into
the appropriate place in the main exim configuration. There is a macro
mechanism available that even saves you from editing the big conffile.

It'll take a lot more time in the long run. One just does not apply a
fix and then forget about it.

I doubt that it benefits them.

Using complex dsearch expressions in what has always been definied as
"a list of domains" is not standard functionality. If you want to use
the upstream exim feature, use it in the exim configuration, not in
the update-exim4.conf configuration.

It doesn't.

Greetings
Marc

NEWS.Debian suggests using the macro mechanism to replace the
no-longer-working dsearch entry in dc_other_hostnames.  I thought it
would be helpful to include an example, since this seems to affect many
people.  Could someone verify that this is correct, and perhaps include
it in the documentation?

In short, if you used to enter

pimlott.net:dsearch;/etc/exim4/virtual

in dc_other_hostnames (ie, the question "Other destinations for which
mail is accepted:), then you should instead add the following line to
exim4.conf.localmacros:

MAIN_LOCAL_DOMAINS = @:localhost:pimlott.net:dsearch;/etc/exim4/virtual

What you put in dc_other_hostnames is no longer used.

Works for me!

Andrew

That is correct afaict ( for the non-split-config case.)
cu andreas

On Thu, May 17, 2007 at 01:04:02PM +0200, Andreas Metzler wrote:
...

I assume you're not implying that it is incorrect for the split-config
case, because that's what I'm using. :-)  In other words, it should work
for everyone.

Andrew

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