The mailing list for listmasters using Sympa

[Brian Thompson <address@concealed>]

Problem resolved... It basically turned out be a sendmail
issue.

Even though "Errors-to:" was initially correct coming from
List.pm, it was being later being rewritten to the physical
hostname by sendmail rewrite rules. "X-Loop" went through
unaffected though since it isn't a header line that sendmail
recognized or knew what to do with in terms of rewrites.

The solution we implemented was to change the DNS record
for the CNAME "lists.foo.com" from a CNAME alias to a
true A record pointing at the server's IP address. That
way sendmail doesn't try to follow the CNAME alias and
rewrite to the A record hostname.

Hope the info helps.

-Brian



Brian Thompson wrote:
> Thanks Liam, it does look like it might be the same issue.
> Here's another clue that might help although I'm still very
> confused -
>
> In "List.pm" there's the following:
>
> ***********
> sub distribute_msg {
> ...
> my ($name, $host) = ($self->{'name'}, $self->{'admin'}{'host'});
> ...
> ## Add useful headers
> $hdr->add('X-Loop', "$name\@$host");
> $hdr->add('X-Sequence', $sequence);
> $hdr->add('Errors-to', $name.&Conf::get_robot_conf($robot, 
> 'return_path_suffix').'@'.$host);
> ...
> ***********
>
> Now, just as a test I tried hardcoding $host in that routine
> to "blah.com" and that does have the effect of changing the
> hostname in both "X-Loop:" and "Errors-to:" to "@blah.com"
> (all other hostname references in the header below are
> unaffected).
>
> But, as noted below, "X-Loop" is already correct. Of the
> two it's only "Errors-to" that shows the physical hostname.
> So I'm not sure how one could be correct and one could be
> wrong given that they're both defined in the same block of
> code using the same variable.
>
> -Brian
>
>
> Liam Kirsher wrote:
> > Brian,
> >
> > This sounds like the same problem I reported a while back.  You 
> > should be able to find it in the archives.
> > David Verdin said he would add it to the bug list, but I haven't 
> > heard anything about it since then.
> >
> > Liam
> >
> > address@concealed wrote:
> > > I'm having a very similar problem and no matter what I try I can't 
> > > seem to get
> > > around it. Below is a header from a simple email sent to one of the 
> > > test lists.
> > >
> > > The problem is that the "To:" and the "Errors-to:" always somehow get
> > > translated to the physical hostname of the server, while the rest of 
> > > the
> > > headers properly show the CNAME that I'm attempting to use - 
> > > "lists.foo.com". This means that when someone attempts to reply back 
> > > to the list, the message
> > > doesn't actually go to the list. I've tried adding the "host" 
> > > variable to
> > > sympa.conf as well going through the instructions for creating a 
> > > virtual host
> > > named "lists.food.com" with associated robot.conf. The physical 
> > > hostname still
> > > keeps coming through. Any info or ideas to try would be greatly 
> > > appreciated.
> > >
> > > Thanks,
> > > Brian
> > >
> > > From: Brian Thompson <address@concealed>
> > > To: address@concealed
> > > Content-Type: text/plain; charset=ISO-8859-1; format=flowed
> > > Content-Transfer-Encoding: 7bit
> > > X-Validation-by: address@concealed
> > > Subject: [briantestlist2] test10
> > > X-Loop: address@concealed
> > > X-Sequence: 1
> > > Errors-to: address@concealed
> > > Precedence: list
> > > Precedence: bulk
> > > X-no-archive: yes
> > > List-Id: <briantestlist2.lists.foo.com>
> > > List-Help: <mailto:address@concealed?subject=help>
> > > List-Subscribe: 
> > > <mailto:address@concealed?subject=subscribe%20briantestlist2>
> > > List-Unsubscribe:
> > > <mailto:address@concealed?subject=unsubscribe%20briantestlist2>
> > > List-Post: <mailto:address@concealed>
> > > List-Owner: <mailto:address@concealed>
> > > List-Archive: <http://lists.foo.com/sympa/arc/briantestlist2>
> > >
> > >