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From: Charles Swiger <cswiger@mac.com>
Date: Wed, 7 Jun 2006 17:43:23 -0400
To: a@zeos.net
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Cc: freebsd-questions@freebsd.org
Subject: Re: On mail principles
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On Jun 7, 2006, at 1:20 PM, a@zeos.net wrote:
> But this way is bad for local purposes: my MTA's diagnostic  
> messages are sent
> trough internet or lost at all, e. g. when my ADSL is in down.
> (Moreover, my letters sent to other local users have non-local  
> "envelope from"
> address. Then local mail begin to go through external MTA.)
>
> What to do in such a situation?

See the sendmail documentation [1] on MASQUERADE_AS().

-- 
-Chuck

[1]: /usr/share/sendmail/cf/README, or check the FAQ from  
www.sendmail.org...