[email protected] a écrit :
> Hello,
> 
> I'm not sure what I should do with bounce messages from aliased addresses.
> 

If this happens "often", disable the alias.

> If X is the sender of a message to A what is an alias for B and my MTA
> can't deliver the message to B for some reason, my MTA creates a bounce
> messages and sends it to X.
> 
> The bounce message contains informations like:
> <B> (expanded from <A>): host HostB [IP] said: ....
> 
> I, or rather the user, don't want that X can see the address B or other
> informations, like HostB, it's IP or whatever.
> 
> So what is common to do, how did you solve this problem?
> (I think I'm not the first with this problem.)
> - I can't send it to A/B because there are some problems.
> - I can't send it to X because X must not see the alias A > B.
> - I'm not going to send it to the postmaster.
> 
> I could filter all bounces, extract the address B or the alias A > B and
> find out this way if it is a bounce for an alias. Then I could send a
> new bounce to X with less informations. What do you think about this?
> 

bounces are not subject to filtering. the only way to filter them is to
use a relay_host and have that relay host do the filtering. but then
that relay_host won't filter the bounces it generates, and so on.

not an easy problem.

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