Re: Smail/Sendmail Question
Graham Lillico +44 1785 248131 <graham.lillico@gecm.com> writes:
> Hello,
>
> I was wondering if the following is possible using either Smail or Sendmail,
>
> What I want to do is to use smail or sendmail mail to deliver my internet
> email, The problem I have is that I need one of these packages to deliver any
> local mail or network mail to the appropriate user/server, but to queue all
> internet email until my dialup connection is established using ppp, I also need
> smail or sendmail to change the "from" address of the email to the address of
> my internet email account, (i.e. email bound for the internet needs the "From"
> address changed from "graham@mail.org" which is my Linux box to
> "graham@internet.com" my internet email account).
>
> Is this possible? if so how.
Well...
Sort of; that is, I've got an smail system on my machine that does
this (it's described in http://www.math.jhu.edu/~martind/mybox.html) -
however, I don't know how well that setup fares under the smail from
hamm. (I've put smail on hold until I have time to deal with it
potentially breaking when I go full hamm - I still use the smail from
bo).
The smail setup I use can easily be modified so that mail to a certain
collection of destination addresses doesn't result in rewritten
headers - all you need to do is copy the "smtp" transport from the
default /etc/smail/transports, and then set up routes in
/etc/smail/routers to handle it; for example, an /etc/smail/routers
file of:
# Your comment here
# Deliver my own network directly - don't rewrite
localmail:
driver=gethostbyname, transport=smtp;
required=mynetwork.foo.com
# Outside world - rewrite and send it to myisp.com for delivery
smart_host:
driver=smarthost, transport=smtprewriter;
path=smtp.myisp.com
You don't need to use a smarthost, but it's probably a good idea for
an intermittently-connected site.
Now I should point out that there are still some things I don't
completely like about this system, and anti-spam stuff on your ISP's
smtp server could screw things up - specifically, if your ISP rejects
mail based on the envelope from address (the address given in the smtp
MAIL FROM: command), as that can't be rewritten.
Assuming that usernames are synchronized across your LAN, you may want
to set up the smail on machines that are not the gateway using the
"satellite" option of smailconfig; I don't really have much experience
with that option. In any case, what you probably want to end up with
on these non-gateway machines is a smartuser directive in
/etc/smail/directors and a smarthost router in /etc/smail/routers
sending everything on to your gateway machine, and the local_xform
option on the smtp transport in /etc/smail/transports.
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