Re: [Exim] Removing workstation name from mail address

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Autor: Kevin Sindhu
Datum:  
To: 'exim-users@exim.org'
Betreff: Re: [Exim] Removing workstation name from mail address
Moin dman!
dman schrieb am Monday, den 07. January 2002:

> > All Win32 programs are set to display tommy@???, but
> > mailing from the Linux machine presents two diffentrent names.....
> > If I use the Null Webmail I get the address tommye@localhost, if I
> > se the


> What does
>     grep 127 /etc/hosts
> output?


I am not sure if changing /etc/hosts would be a solution. Most good
webmailers are(and should) configurable to show the proper sending
domain.

> exim uses the gethostbyname() C function to determine what your
> machine's name is. This function gives back the first name listed
> in /etc/hosts for the loopback IP. Make the first name there your
> external name. For example :


What do you do when the MTA(in this case, the web-mail) sets it up to
be anything other than $hostname. IMO, this is a hack and not a
correct solution. Both exim and a good mailer can be setup without
messing with /etc/hosts...

> > mail command I get tommye@???, where web is the name
> > of the Linux machine.


> $ host einarsson.nu
> einarsson.nu has no A record (Authoritative answer)


This was good of you to point out. I would higly recommend running
dnswalk on the entire domain and fix all the problems. However
einarsson.nu now shows a MX.

einarsson.nu.       23h54m21s IN MX  10 ix.alldomains.com.


> If I tried to send mail to <something>@einarsson.nu it would fail
> because there is no A or MX record for einarsson.nu (exim doesn't
> know where to open a connection to).


Yup.

> If I try to send mail to <something>@web.einarsson.nu exim would
> deliver the message to 'ix.alldomains.com'. Is this what you want?
> Also, since web.einarsson.nu has no A record no web browser will be
> able to browse web pages on your machine. (I imagine that's the
> purpose of a system named 'web') In fact, no one can get any
> connection to that machine from its name.


[...]

> > I will gladly admit that I'm no wiz in Linux, so I don't knowhere
> > tostart search, and using the archive is a bit hard if you don't
> > have a specific search criterea (the word domain gave me >8000
> > hits).


> Can you provide some more information about your network? From the
> above data I think something isn't complete somewhere.


Read about:
         - DNS Setup (Search Google. - Keyword(s) - DNS Setup/Security


         - Mail routing ( "    "     / Read Exim Spec/ play with -d11
                        switch)
         - Network design


         - How to bake a carrot cake and send it via express post to
           me.


Ciao,

    - Hungry Kevin


--
First, a few words about tools.
Basically, a tool is an object that enables you to take advantage of
the laws of physics and mechanics in such a way that you can seriously
injure yourself.  Today, people tend to take tools for granted.  If
you're ever walking down the street and you notice some people who look
particularly smug, the odds are that they are taking tools for
granted.  If I were you, I'd walk right up and smack them in the face.
        -- Dave Barry, "The Taming of the Screw"