Glynn Clements writes:
>
> Chris Buenger wrote:
>
> > i try to send mail trough a sendmail server to my isp. sendmail runs on
> > a suse 6.1 (2.2.10) box. my isp�s mail server rejects msgs -> sender
> > name must resolve
> >
> > q: how to masquerade the relayed msgs?
>
> Set the DM line in sendmail.cf accordingly:
>
> # who I masquerade as (null for no masquerading) (see also $=M)
> DM valid.domain.com
As I also had to discover by trial and error, be sure to list the
domain name that you want to masquerade as in your /etc/hosts file
with a valid IP address. If you don't, the DM valid.domain.name will
not get used as you expect.
For example, I have my mail routed to a catchall machine answering to
thrillseeker.net. I set DMthrillseeker.net, however my local hostname
on my own internal lan is rhino. If I send mail without
thrillseeker.net defined in my /etc/hosts pointing back to my assigned
IP address (this is a cable modem), i.e. I let named resolve it to the
real world thrillseeker.net, then the outbound name always resolves to
rhino.thrillseeker.net, which is not in anyone's tables.
Example:
Jul 5 18:08:20 rhino sendmail[724]: SAA00724: from=root, size=45,
class=0, pri=30045, nrcpts=1,
msgid=<[EMAIL PROTECTED]>,
relay=root@localhost
Jul 5 18:08:21 rhino sendmail[729]: SAA00724:
[EMAIL PROTECTED], ctladdr=root (0/0), delay=00:00:04,
xdelay=00:00:01, mailer=esmtp, relay=web73.ntx.net. [209.1.144.182],
stat=Deferred: 451 <[EMAIL PROTECTED]>... access denied,
<rhino.thrillseeker.net> does not resolve in DNS
It works fine for me to put thrillseeker.net pointing back to me.
Then the outbound name resolves via the /etc/hosts, and I get what I
want:
Jul 5 18:12:41 rhino sendmail[742]: SAA00742: from=root, size=45,
class=0, pri=30045, nrcpts=1,
msgid=<[EMAIL PROTECTED]>, relay=root@localhost
Jul 5 18:12:42 rhino sendmail[747]: SAA00742:
[EMAIL PROTECTED], ctladdr=root (0/0), delay=00:00:05,
xdelay=00:00:01, mailer=esmtp, relay=web73.ntx.net. [209.1.144.182],
stat=Sent (PAA11511 Message accepted for delivery)
Perhaps this is logical to others, but to me if I put
DMthrillseeker.net, then the machine should put that on the outbound
msgid without question. Why else would I list it in the sendmail.cf?
Billy
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