On mail principles

[Alex Zbyslaw]

a at zeos.net wrote:

>On Wed, Jun 07, 2006 at 05:43:23PM -0400, Charles Swiger wrote:
>  
>
>>On Jun 7, 2006, at 1:20 PM, a at 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...
>>    
>>
>
>That is not a proper feature because of different local users can use world 
>mail addresses with different hostnames. But masquerading is good only for 
>one domain.
>  
>
I believe newer postfixes have support for "masquerading" different 
local users with different external addresses when sending mail 
externally.  Haven't tried it: just noted the feature in some email 
somewhere for future evaluation, so take with the usual pinch of salt.

--Alex