Subject: sendmail domain configuration as Message 9

Phil Savoie psavoie1783 at rogers.com
Wed Sep 1 18:31:45 UTC 2010


On 09/01/2010 01:38 PM, Allen, Jack wrote:
> 	Maybe I did not explain the problem clearly. I have a cable
> modem connected to a router. The ISP provides an IP Address to the
> router via DHCP. That would be on the WAN side of the router. On the LAN
> side of the router I am using 10.11.12.X for my systems. The router is
> 10.11.12.254 and my Linux system is 10.11.12.1 and the PCs are
> 10.11.12.2 and 10.11.12.3 and the home automation device is 10.11.12.4
> and TIVO is 10.11.12.5. I have DNS (named) running on my Linux system
> with the domain name of my_domain.network. The Linux system is setup to
> relay email to the ISP. When the Linux system connects to the ISP mail
> servers it tells it the connection is from linux.my_domain.network which
> is validated and determined not to be a valid domain, which it is not. I
> want the ISP mail server to see the connection form linux.my_domain.net
> which is a valid registered domain. But using masquerading is not doing
> that.
> 
> 	I have looked at the sendmail source and when it first starts it
> get the hostname and assigns the value to $k. There does not seem to be
> anything that changes that value when doing masquerading and the value
> of $k is what is sent to the ISP mail server as the domain.
> 
> -----
> Jack Allen
> 
Hi Jack,

How about this; in your sendmail.cf file add:

MASQUERADE_AS ('domain_of_ISP') dnl
FEATURE (masquerade_envelope) dnl
FEATURE (allmasquerade) dnl

Then restart sendmail to compile in the changes to your sendmail.mc file

This may solve your problem.

Regards,

Phil




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