On 5/6/2016 4:45 PM, Rob McKennon wrote:
> Hello,
> 
> We are receiving mail delivered to users that don't exist.
> 
> In our valias.txt file, we have the usual aliases like this:
> 
> [email protected]   [email protected]
> [email protected]   [email protected]
> 
> and at the bottom is something like this for other domains we own:
> 
> @domain2.com        @domain.com
> @domain3.com        @domain.com
> 
> 
> The problem we are having is that email coming in addressed to our
> other domains like "[email protected]" are NOT being rejected even
> though there is no user foobar nor any alias [email protected].  The
> bogus mails are being stored in new user folders like:
> /var/spool/mail/domain.com/foobar.
> We kind of assumed that the domain aliases would still get checked
> for valid users.  Is this a bug or is that a bad assumption?

Wildcard aliases defeat recipient validation.
This is also true for wildcard canonical map rewrites.

The solution is to get rid of the wildcards and use 1-1 mappings.


  -- Noel Jones

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