On Mon, Dec 14, 2009 at 12:11:16PM -0500, Brian Evans - Postfix List wrote:
> You may have missed that the OP's domain in question is listed in
> mydestination. (main.cf vs 'postconf -n' noise)
>
> Without a parent_domain_matches_subdomains change, at least for
> mydestination, www.example.net will match example.net when example.net
> is listed in mydestination.
No. This is wrong. The "mydestination" match list is not subject to
parent domain matching, it is a list of literal domains.
The relay_domains match list is subject to parent domain matching,
and because it defaults to $mydestination, will by default include
sub-domains of domains listed in $mydestination. This backwards
compatibility should be turned off by all users who don't need it:
# Empty
relay_domains =
# Or
relay_domains = <explicit list of domains you want>
Best practice is to not use the default value for this parameter.
--
Viktor.
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